Laser and its applicationsHabiba ArainThis document discusses the definition, types, classes, and applications of lasers. It begins by defining lasers as light amplification by stimulated emission of radiation. It describes the three main types of lasers based on coherence and directionality: many wavelengths that are multidirectional and incoherent; monochromatic, directional, and coherent; and single wavelength, directional beams. It then covers the fundamentals of laser operation, types based on material used, classes based on biological damage caused, and typical emission wavelengths. Applications discussed include medicine, welding, cutting, surveying, communication, garment industry, data storage, holography, spectroscopy, heat treatment, barcoding, printing, cooling, and military uses.
Basics of Lasers Lokender YadavLaser science is principally concerned with quantum electronics, laser construction, optical cavity design, the physics of producing a population inversion in laser media, and the temporal evolution of the light field in the laser. It is also concerned with the physics of laser beam propagation, particularly the physics of Gaussian beams, with laser applications, and with associated fields such as non-linear optics and quantum optics.
Presentation laserDr. M. K. DeoreAlaseris a device that emitslightthrough a process ofoptical amplificationbased on thestimulated emissionofelectromagnetic radiation. The term "laser" originated as anacronymfor "light amplification by stimulated emission of radiation
Laser pptseva for poor peopleLasers emit light that is highly directional, monochromatic, and coherent. Common laser components include an active medium, excitation mechanism, and high and partially reflective mirrors. Lasing occurs when atoms in the active medium are excited and stimulated emission produces photons. Laser output is measured in watts, joules, irradiance, and pulsed vs. continuous wave. Laser hazards include eye, skin, chemical, electrical, and fire risks. Lasers are classified based on wavelength, average power, energy per pulse, and beam exposure to determine appropriate safety controls.
Laser physics lect1 (1)ahmed maher teaching hospitalThis document outlines the course structure and content for an introduction to laser theory class. The course will include 12 lectures, 4 homework assignments, a midterm exam, final exam, and individual reports. Key topics that will be covered include laser fundamentals, energy levels, rate equations, cavity design, gas lasers, solid state lasers, semiconductor lasers, and other laser types. Lasers can be classified based on their operation mode, population inversion mechanism, or active medium used. The goal is for students to understand the basic scientific principles that enable laser operation.
Medical applications of laser 2Bio PhysicsLaser pumping involves transferring energy from an external source into a laser's gain medium, producing excited states in the gain medium's atoms. When there are more excited atoms than unexcited atoms, population inversion occurs, allowing stimulated emission and laser amplification or lasing. Population inversion is achieved after adequate pumping. Continuous wave lasers emit light continuously while pulsed lasers emit light in optical pulses, most commonly nanosecond pulses from Q-switched lasers. Laser-tissue interaction occurs mainly through absorption, with the light energy being transformed into heat. This results in photothermal, photoablative, or photochemical effects depending on laser parameters like intensity and pulse duration.
Laservineet gupta The document discusses lasers, including their history, characteristics, components, classifications, and uses. It provides details on:
- The invention of the laser by Maiman in 1960 and its influence as a technological achievement.
- The key characteristics of laser light that make it coherent, directional, and monochromatic.
- The basic components and functioning of a laser, including the active medium, excitation mechanism, and optical resonator.
- The various classes of lasers according to output levels and safety standards.
- Applications of lasers in medicine, industry, everyday life, research, and holography.
Laser presentation 11Amit SenThe laser was invented in 1960 by Theodore Maiman. It works by stimulating the emission of light through a process called optical amplification. The key components of a laser are an active medium to generate the light, an excitation mechanism like electricity to energize the medium, and an optical resonator with mirrors to reflect the light waves and produce coherent, monochromatic light. Lasers have many applications, including use in medicine for procedures like removing gallstones, in manufacturing for precision tasks like drilling, and in everyday devices like barcode scanners, CD players, and communication networks.
LASERNi A laser is a device that emits light through stimulated emission of radiation, as described by Theodore Maiman who built the first laser in 1960. Lasers produce coherent, monochromatic, collimated light that is useful for applications like barcodes, surgery, welding, and fiber optics. Laser light is more powerful and focused than ordinary light. Lasers are classified based on their hazard levels, with class 4 lasers most dangerous. While lasers have advantages like precision cutting, they also have disadvantages like high costs and safety risks if not properly handled.
Laser Somya TyagiThe document discusses lasers, including their basics, how they work, types of lasers, and applications. It explains that lasers emit coherent, monochromatic, directional light through stimulated emission. Common types include solid-state, gas, dye, excimer, and semiconductor lasers. Lasers have many industrial, environmental, research, communications, and medical applications such as laser printers, barcode scanners, fiber optics, surgery, and distance measurement. They are used widely in everyday devices and settings.
مقدمة في الليزرDr. Hazem Falah Sakeekمحاضرة تمهيدية للدكتور حازم فلاح سكيك قسم الفيزياء جامعة الازهر - عزة عن فكرة عمل الليزر موجهة لطلبة المرحلة الثانوية، القيت المحاضرة ضمن فعاليات المعرض العلمي الرابع لقسم الفيزياء في العام 2009
LaserRUSHIT PATELThe document discusses lasers, including their history, components, types, and applications. It provides details on (1) how lasers work by stimulating emissions to produce coherent and monochromatic light, (2) the inventors of the laser and types such as gas, solid-state, and semiconductor lasers, and (3) applications of lasers in areas like medicine, computing, military defense, and industry. Lasers are described as having significant utility due to their unique light properties.
CO2 and N2 LaserskeshavkumarjhaThis document summarizes a seminar on CO2 and N2 lasers. It discusses the principles and operation of CO2 lasers, including their structure, discharge mechanism, and energy level transitions. It explains that CO2 lasers produce infrared light through transitions between vibrational states of carbon dioxide molecules. The document also covers transverse excitation atmospheric (TEA) CO2 lasers, which allow higher power output. Finally, it summarizes the principles and operation of N2 lasers, including their structure, excitation mechanism, efficiency, and applications in optical pumping of dye lasers and air pollution measurement.
Laser ppt 2arpit shukla1) The document describes the helium-neon laser, which was invented in 1960 and works on the principle of a four-level laser system.
2) It consists of a glass tube containing a mixture of helium and neon gases, along with electrodes that provide an electric discharge to excite the gases.
3) When excited by the discharge, helium atoms transfer their energy to neon atoms, pushing them into metastable energy levels. Stimulated emission then occurs as the neon atoms fall from these levels, producing the laser beam.
Basic Idea of Laser by deepika guptaDeepika Gupta1. The document discusses the working principles of lasers, including the key components of a laser system and the processes of stimulated emission and population inversion that enable laser action.
2. It specifically describes different laser types such as ruby lasers, He-Ne lasers, semiconductor diode lasers, and their applications. Ruby was the first laser invented and produces red light, while He-Ne lasers emit visible light in the red and infrared spectrum.
3. The document provides detailed explanations of laser concepts like optical pumping, energy level diagrams, cavity mirrors, and continuous wave versus pulsed operation.
LaserDigvijaysinh GohilThe document provides information on the basics of lasers and laser light. It defines LASER as an acronym for Light Amplification by Stimulated Emission of Radiation. It describes the key properties of laser beams including high coherence, intensity, directionality, and monochromaticity. It also discusses atomic transitions, population inversion, components of lasers including the active medium and optical resonator, and provides examples of specific lasers such as Nd:YAG lasers.
Laser and it's application.Ahsanullah SalimLaser light is generated through stimulated emission of radiation. Key properties of lasers include monochromaticity, directionality, and temporal and spatial coherence. The essential components of a laser are a gain medium, energy pump source, and optical resonator. Common laser types include gas lasers like helium-neon, solid state lasers like ruby, and semiconductor lasers. Applications include medicine, entertainment, telecommunications, industry, and military technologies.
Laser ii 2 pptBahir Dar universityThe document discusses nanosecond lasers, which produce optical pulses with durations measured in nanoseconds. It describes how nanosecond pulses are generated using techniques like Q-switching and gain switching that produce high intensity pulses. Nanosecond lasers have applications in fields like materials processing, distance measurement, remote sensing, and more due to their ability to deliver high pulse energies over short timescales.
Laser and its applicationsDiaa SrahinThis document discusses lasers and their applications. It begins by defining what a laser is, explaining that it produces coherent, monochromatic light in a single direction. It then covers the basic science of how lasers work through stimulated emission. Different types of lasers are described based on the lasing medium used. Medical applications are discussed in depth, including uses in surgery, dentistry, dermatology and more. Laser hair removal is explained as an example, describing how lasers target melanin in hair follicles to destroy them over multiple treatments. In summary, the document provides an overview of lasers, their functioning principles, types and important applications such as in medicine.
Basic concept of laser physicsDhrupal PatelThis document discusses the basic concepts of laser physics. It explains that population inversion, which is required for laser action, can be achieved through a process called pumping. Pumping involves exciting atoms from a lower energy state to a higher energy state using an external energy source. Different types of lasers use various pumping techniques, such as optical pumping in solid state lasers, electrical pumping in semiconductor lasers, and direct energy conversion in gas lasers. The active medium achieving population inversion can be solid, liquid, gas or plasma. Common types of lasers include solid state, liquid, gaseous, dye, and semiconductor lasers. A laser consists of an active medium situated between two mirrors, one a perfect reflector and the
Laser ppt.shivam5667Lasers transform light of various frequencies into a chromatic radiation that is coherent, highly intense, highly directional, and highly monochromatic. A laser works by stimulating the emission of photons from excited atoms or molecules in a lasing medium, which causes those photons to stimulate the emission of more photons, leading to an avalanche effect. Nd:YAG lasers use a neodymium-doped yttrium aluminum garnet crystal as the lasing medium, which is pumped by a flashlamp to produce a coherent beam of infrared light. Lasers have applications in industry, medicine, the military, and science due to their unique properties.
LASERkrishslideLasers produce a coherent beam of light through stimulated emission of radiation. They work by pumping a gain medium like ruby or gas to create a population inversion, where more atoms are in an excited state than a lower state. This inversion allows for stimulated emission, where photons emitted are all in phase, parallel, and the same wavelength, producing a directional, concentrated beam. Lasers have many applications including optical storage devices, surgery, manufacturing, and more due to their unique monochromatic and coherent properties.
ppt on Laser:Brief studyRiddhi Patel1. A laser works by stimulating the emission of coherent light through a process called stimulated emission.
2. Atoms in a lasing medium are excited to a higher energy level through an external energy source, creating a population inversion where there are more excited atoms than unexcited atoms.
3. When an excited atom spontaneously decays and emits a photon, that photon can stimulate the emission of another photon of the same wavelength, phase, and direction, producing an amplified, coherent beam of light.
LaserDeepanjana PaulLight Amplification by Stimulated Emission of Radiation. Its basic principle of working, features or characteristics, types, applications, hazards caused by LASER and future scopes.
Laservineet gupta The document discusses lasers, including their history, characteristics, components, classifications, and uses. It provides details on:
- The invention of the laser by Maiman in 1960 and its influence as a technological achievement.
- The key characteristics of laser light that make it coherent, directional, and monochromatic.
- The basic components and functioning of a laser, including the active medium, excitation mechanism, and optical resonator.
- The various classes of lasers according to output levels and safety standards.
- Applications of lasers in medicine, industry, everyday life, research, and holography.
Laser presentation 11Amit SenThe laser was invented in 1960 by Theodore Maiman. It works by stimulating the emission of light through a process called optical amplification. The key components of a laser are an active medium to generate the light, an excitation mechanism like electricity to energize the medium, and an optical resonator with mirrors to reflect the light waves and produce coherent, monochromatic light. Lasers have many applications, including use in medicine for procedures like removing gallstones, in manufacturing for precision tasks like drilling, and in everyday devices like barcode scanners, CD players, and communication networks.
LASERNi A laser is a device that emits light through stimulated emission of radiation, as described by Theodore Maiman who built the first laser in 1960. Lasers produce coherent, monochromatic, collimated light that is useful for applications like barcodes, surgery, welding, and fiber optics. Laser light is more powerful and focused than ordinary light. Lasers are classified based on their hazard levels, with class 4 lasers most dangerous. While lasers have advantages like precision cutting, they also have disadvantages like high costs and safety risks if not properly handled.
Laser Somya TyagiThe document discusses lasers, including their basics, how they work, types of lasers, and applications. It explains that lasers emit coherent, monochromatic, directional light through stimulated emission. Common types include solid-state, gas, dye, excimer, and semiconductor lasers. Lasers have many industrial, environmental, research, communications, and medical applications such as laser printers, barcode scanners, fiber optics, surgery, and distance measurement. They are used widely in everyday devices and settings.
مقدمة في الليزرDr. Hazem Falah Sakeekمحاضرة تمهيدية للدكتور حازم فلاح سكيك قسم الفيزياء جامعة الازهر - عزة عن فكرة عمل الليزر موجهة لطلبة المرحلة الثانوية، القيت المحاضرة ضمن فعاليات المعرض العلمي الرابع لقسم الفيزياء في العام 2009
LaserRUSHIT PATELThe document discusses lasers, including their history, components, types, and applications. It provides details on (1) how lasers work by stimulating emissions to produce coherent and monochromatic light, (2) the inventors of the laser and types such as gas, solid-state, and semiconductor lasers, and (3) applications of lasers in areas like medicine, computing, military defense, and industry. Lasers are described as having significant utility due to their unique light properties.
CO2 and N2 LaserskeshavkumarjhaThis document summarizes a seminar on CO2 and N2 lasers. It discusses the principles and operation of CO2 lasers, including their structure, discharge mechanism, and energy level transitions. It explains that CO2 lasers produce infrared light through transitions between vibrational states of carbon dioxide molecules. The document also covers transverse excitation atmospheric (TEA) CO2 lasers, which allow higher power output. Finally, it summarizes the principles and operation of N2 lasers, including their structure, excitation mechanism, efficiency, and applications in optical pumping of dye lasers and air pollution measurement.
Laser ppt 2arpit shukla1) The document describes the helium-neon laser, which was invented in 1960 and works on the principle of a four-level laser system.
2) It consists of a glass tube containing a mixture of helium and neon gases, along with electrodes that provide an electric discharge to excite the gases.
3) When excited by the discharge, helium atoms transfer their energy to neon atoms, pushing them into metastable energy levels. Stimulated emission then occurs as the neon atoms fall from these levels, producing the laser beam.
Basic Idea of Laser by deepika guptaDeepika Gupta1. The document discusses the working principles of lasers, including the key components of a laser system and the processes of stimulated emission and population inversion that enable laser action.
2. It specifically describes different laser types such as ruby lasers, He-Ne lasers, semiconductor diode lasers, and their applications. Ruby was the first laser invented and produces red light, while He-Ne lasers emit visible light in the red and infrared spectrum.
3. The document provides detailed explanations of laser concepts like optical pumping, energy level diagrams, cavity mirrors, and continuous wave versus pulsed operation.
LaserDigvijaysinh GohilThe document provides information on the basics of lasers and laser light. It defines LASER as an acronym for Light Amplification by Stimulated Emission of Radiation. It describes the key properties of laser beams including high coherence, intensity, directionality, and monochromaticity. It also discusses atomic transitions, population inversion, components of lasers including the active medium and optical resonator, and provides examples of specific lasers such as Nd:YAG lasers.
Laser and it's application.Ahsanullah SalimLaser light is generated through stimulated emission of radiation. Key properties of lasers include monochromaticity, directionality, and temporal and spatial coherence. The essential components of a laser are a gain medium, energy pump source, and optical resonator. Common laser types include gas lasers like helium-neon, solid state lasers like ruby, and semiconductor lasers. Applications include medicine, entertainment, telecommunications, industry, and military technologies.
Laser ii 2 pptBahir Dar universityThe document discusses nanosecond lasers, which produce optical pulses with durations measured in nanoseconds. It describes how nanosecond pulses are generated using techniques like Q-switching and gain switching that produce high intensity pulses. Nanosecond lasers have applications in fields like materials processing, distance measurement, remote sensing, and more due to their ability to deliver high pulse energies over short timescales.
Laser and its applicationsDiaa SrahinThis document discusses lasers and their applications. It begins by defining what a laser is, explaining that it produces coherent, monochromatic light in a single direction. It then covers the basic science of how lasers work through stimulated emission. Different types of lasers are described based on the lasing medium used. Medical applications are discussed in depth, including uses in surgery, dentistry, dermatology and more. Laser hair removal is explained as an example, describing how lasers target melanin in hair follicles to destroy them over multiple treatments. In summary, the document provides an overview of lasers, their functioning principles, types and important applications such as in medicine.
Basic concept of laser physicsDhrupal PatelThis document discusses the basic concepts of laser physics. It explains that population inversion, which is required for laser action, can be achieved through a process called pumping. Pumping involves exciting atoms from a lower energy state to a higher energy state using an external energy source. Different types of lasers use various pumping techniques, such as optical pumping in solid state lasers, electrical pumping in semiconductor lasers, and direct energy conversion in gas lasers. The active medium achieving population inversion can be solid, liquid, gas or plasma. Common types of lasers include solid state, liquid, gaseous, dye, and semiconductor lasers. A laser consists of an active medium situated between two mirrors, one a perfect reflector and the
Laser ppt.shivam5667Lasers transform light of various frequencies into a chromatic radiation that is coherent, highly intense, highly directional, and highly monochromatic. A laser works by stimulating the emission of photons from excited atoms or molecules in a lasing medium, which causes those photons to stimulate the emission of more photons, leading to an avalanche effect. Nd:YAG lasers use a neodymium-doped yttrium aluminum garnet crystal as the lasing medium, which is pumped by a flashlamp to produce a coherent beam of infrared light. Lasers have applications in industry, medicine, the military, and science due to their unique properties.
LASERkrishslideLasers produce a coherent beam of light through stimulated emission of radiation. They work by pumping a gain medium like ruby or gas to create a population inversion, where more atoms are in an excited state than a lower state. This inversion allows for stimulated emission, where photons emitted are all in phase, parallel, and the same wavelength, producing a directional, concentrated beam. Lasers have many applications including optical storage devices, surgery, manufacturing, and more due to their unique monochromatic and coherent properties.
ppt on Laser:Brief studyRiddhi Patel1. A laser works by stimulating the emission of coherent light through a process called stimulated emission.
2. Atoms in a lasing medium are excited to a higher energy level through an external energy source, creating a population inversion where there are more excited atoms than unexcited atoms.
3. When an excited atom spontaneously decays and emits a photon, that photon can stimulate the emission of another photon of the same wavelength, phase, and direction, producing an amplified, coherent beam of light.
LaserDeepanjana PaulLight Amplification by Stimulated Emission of Radiation. Its basic principle of working, features or characteristics, types, applications, hazards caused by LASER and future scopes.
Microscope TypesMuhammad ElsobkyA microscope is an instrument used to see objects that are too small for the naked eye. The science of investigating small objects using such an instrument is called microscopy. Microscopic means invisible to the eye unless aided by a microscop