CMP4203 Lasers and Photonics
... The content is designed to provide the foundations with which the operation of laser devices may be understood at the mechanistic level. Together with skills acquired in related courses in the Computer Engineering degree program, this provides the student with the skill base to approach the next lev ...
... The content is designed to provide the foundations with which the operation of laser devices may be understood at the mechanistic level. Together with skills acquired in related courses in the Computer Engineering degree program, this provides the student with the skill base to approach the next lev ...
Physics 428 Spring 2015 Syllabus Instructor:
... Geometrical optics will not be covered. The topics that will be covered include: the electromagnetic spectrum; radiometry; waves and the wave equation; harmonic waves; electromagnetic waves; superposition of waves; standing waves; phase and group velocities; quantization of electromagnetic radiation ...
... Geometrical optics will not be covered. The topics that will be covered include: the electromagnetic spectrum; radiometry; waves and the wave equation; harmonic waves; electromagnetic waves; superposition of waves; standing waves; phase and group velocities; quantization of electromagnetic radiation ...
LASER
... energy level. These atoms spontaneously decay to a relatively long-lived, lower energy, metastable state. A population inversion is achieved when the majority of atoms have reached this metastable state. Lasing action occurs when an electron spontaneously returns to its ground state and produces a p ...
... energy level. These atoms spontaneously decay to a relatively long-lived, lower energy, metastable state. A population inversion is achieved when the majority of atoms have reached this metastable state. Lasing action occurs when an electron spontaneously returns to its ground state and produces a p ...
Wave on a String
... 3. Resonating Cavity (Mirrors) - allows the stimulated photons to travel back and forth through the gain medium so they can stimulate more photons (light amplification) ...
... 3. Resonating Cavity (Mirrors) - allows the stimulated photons to travel back and forth through the gain medium so they can stimulate more photons (light amplification) ...
Laser beam shaping in industrial applications Wei-Yuen Tan 84717925
... Optics so far in this course: • Two related concepts: – Ray direction due to refraction – Optical path length ...
... Optics so far in this course: • Two related concepts: – Ray direction due to refraction – Optical path length ...
Lecture 5. Confocal microscopy and instrumentation I
... 1. Has a waist M (not M2) times larger than the embedded Gaussian. 2. Will propagate with a divergence M times greater than the embedded Gaussian 3. Has the same curvature and Raleigh range. ...
... 1. Has a waist M (not M2) times larger than the embedded Gaussian. 2. Will propagate with a divergence M times greater than the embedded Gaussian 3. Has the same curvature and Raleigh range. ...
laser1
... Emission of Radiation • A device produces a coherent beam of optical radiation by stimulating electronic, ionic, or molecular transitions to higher energy levels • When they return to lower energy levels by stimulated emission, they emit energy. ...
... Emission of Radiation • A device produces a coherent beam of optical radiation by stimulating electronic, ionic, or molecular transitions to higher energy levels • When they return to lower energy levels by stimulated emission, they emit energy. ...
ppt
... • As special kind of materials have the possibility of exciting atoms by application of a voltage so that when the electrons go back to normal they emit light. • These are called light emitting diodes or LEDs. LEDs are a basic component in lasers. ...
... • As special kind of materials have the possibility of exciting atoms by application of a voltage so that when the electrons go back to normal they emit light. • These are called light emitting diodes or LEDs. LEDs are a basic component in lasers. ...
laser2-broadening
... population inversion. • Where spontaneous and stimulated emission of photons takes place. • Example: solid, liquid, gas and semiconductor. ...
... population inversion. • Where spontaneous and stimulated emission of photons takes place. • Example: solid, liquid, gas and semiconductor. ...
PHYS4014 - Lasers and Nonlinear Optics
... relevant to the topics included in the course outline, and apply these techniques to solve general classes of problems; Write down and, where appropriate, either prove or explain the underlying basis of physical laws relevant to the course topics, discussing their applications and appreciating their ...
... relevant to the topics included in the course outline, and apply these techniques to solve general classes of problems; Write down and, where appropriate, either prove or explain the underlying basis of physical laws relevant to the course topics, discussing their applications and appreciating their ...
IEEE Photonics Society - The IEEE French Chapter
... http://www.telecom-paristech.fr/telecom-paristech/adresses-acces-contacts.html ...
... http://www.telecom-paristech.fr/telecom-paristech/adresses-acces-contacts.html ...
P1X
... • First constructed in 1961. • Mixture of He and Ne (~10-3 atm) sealed in a glass enclosure with two electrodes to create ionisation by continuous gas discharge. • Laser action not from ground level so the population in the lower state is small. It is easy to obtain N2>N1 so it can operate continuou ...
... • First constructed in 1961. • Mixture of He and Ne (~10-3 atm) sealed in a glass enclosure with two electrodes to create ionisation by continuous gas discharge. • Laser action not from ground level so the population in the lower state is small. It is easy to obtain N2>N1 so it can operate continuou ...
ELECTRICAL & COMPUTER ENGINEERING SEMINAR “Ultrafast Lasers and Devices”
... modelocked semiconductor lasers, and bismuth-oxide nonlinear fiber. Saturable Bragg absorbers, which add an intensity-dependent loss to a laser cavity, can either be used as the main pulse shaping mechanism in an ultrafast laser, or simply as a starting mechanism. Ultra-broadband saturable Bragg ref ...
... modelocked semiconductor lasers, and bismuth-oxide nonlinear fiber. Saturable Bragg absorbers, which add an intensity-dependent loss to a laser cavity, can either be used as the main pulse shaping mechanism in an ultrafast laser, or simply as a starting mechanism. Ultra-broadband saturable Bragg ref ...
Lasers Essay Research Paper The light from
... This is called spontaneous emission. This is how a neon sign (or other gas discharge light such as a mercury vapour lamp) produces light. The photons travel rapidly in all directions. They are visible along the length of the neon tube or radiate outward from the light source. The spontaneous emissio ...
... This is called spontaneous emission. This is how a neon sign (or other gas discharge light such as a mercury vapour lamp) produces light. The photons travel rapidly in all directions. They are visible along the length of the neon tube or radiate outward from the light source. The spontaneous emissio ...
Semiconductor Lasers
... wave (of the correct wavelength) in the injection region, and the gain increases as the number of electrons and holes injected across the junction increases. An optical waveguide is made on the crystal surface. The two ends of the crystal are cleaved to forma Fabry–Perot resonator. Due to difference ...
... wave (of the correct wavelength) in the injection region, and the gain increases as the number of electrons and holes injected across the junction increases. An optical waveguide is made on the crystal surface. The two ends of the crystal are cleaved to forma Fabry–Perot resonator. Due to difference ...
Facts About Ultra Violet (UV) Lights
... The lamps should be cleaned periodically (every two weeks) by wiping them with a cloth dampened with alcohol or ammonia to maintain maximum output. ...
... The lamps should be cleaned periodically (every two weeks) by wiping them with a cloth dampened with alcohol or ammonia to maintain maximum output. ...
LIGHT APLIFICATION by STIMULATED EMISSION of RADITIONS
... conditions must be satisfied 1)The higher energy state should have longer life time 2) The number of atoms in higher energy state E1 must be more than that in E0 ...
... conditions must be satisfied 1)The higher energy state should have longer life time 2) The number of atoms in higher energy state E1 must be more than that in E0 ...
Physics 123 “Majors” Section Unit 1
... It works by quantum mechanics. (3 students) d. they can be focused more than regular light which make them useful for things like surgery or welding (2 students) e. I didn't know that some of the qualities of lasers cannot possibly be mimicked by conventional light bulbs. -"higher order coherences“ ...
... It works by quantum mechanics. (3 students) d. they can be focused more than regular light which make them useful for things like surgery or welding (2 students) e. I didn't know that some of the qualities of lasers cannot possibly be mimicked by conventional light bulbs. -"higher order coherences“ ...
File - ce
... terms of numbers, the diode laser is the most common laser today. The 2 common families of diode lasers are composed of: * Ga AIAs (Gallium/Aluminum/Arsenide) with a wavelength output in the 750 to 950 nanometers (used in CD &CD/ROM players), * InGaAsP (Indium/Gallium/Arsenide/Phosphide) with a wave ...
... terms of numbers, the diode laser is the most common laser today. The 2 common families of diode lasers are composed of: * Ga AIAs (Gallium/Aluminum/Arsenide) with a wavelength output in the 750 to 950 nanometers (used in CD &CD/ROM players), * InGaAsP (Indium/Gallium/Arsenide/Phosphide) with a wave ...
Click To
... Background: A high-average-power solid-state laser is typically pumped by injecting light from high-power two-dimensional semiconductor laser arrays. The laser arrays are frequently fitted with lenses that separately collimate the output of the bars so that the pump light is collimated well enough f ...
... Background: A high-average-power solid-state laser is typically pumped by injecting light from high-power two-dimensional semiconductor laser arrays. The laser arrays are frequently fitted with lenses that separately collimate the output of the bars so that the pump light is collimated well enough f ...
docx - Pdx
... (http://phet.colorado.edu/en/simulation/lasers). Start the applet by clicking on Run Now! This simulation uses optical pumping, or stimulation by photons, as an energy source for the laser. Most conventional lasers use “electrical pumping”, or stimulation by energetic electrons, to excite the atoms. ...
... (http://phet.colorado.edu/en/simulation/lasers). Start the applet by clicking on Run Now! This simulation uses optical pumping, or stimulation by photons, as an energy source for the laser. Most conventional lasers use “electrical pumping”, or stimulation by energetic electrons, to excite the atoms. ...
laser syllabus 11
... In this course we will discuss many aspects of laser physics, from theory to design. Starting with an overview of how lasers work, we’ll work through the origin of gain in different media, rate equations for continuous-wave and pulsed lasers, Gaussian beams, resonators. We’ll also discuss more advan ...
... In this course we will discuss many aspects of laser physics, from theory to design. Starting with an overview of how lasers work, we’ll work through the origin of gain in different media, rate equations for continuous-wave and pulsed lasers, Gaussian beams, resonators. We’ll also discuss more advan ...
Midterm Exam
... Instructions: Work through the following problem neatly and professionally, and without collaboration of any kind. You may consult your own notes, and any published textbook. Please be neat and professional in your presentation. Include plots and words to expand on your results. A perfect score on t ...
... Instructions: Work through the following problem neatly and professionally, and without collaboration of any kind. You may consult your own notes, and any published textbook. Please be neat and professional in your presentation. Include plots and words to expand on your results. A perfect score on t ...
Abstract n Bio - Prof Arto V Nurmikko
... This talk focuses on contemporary approaches to create compact lasers which can continuously span the full red‐green‐blue visible range. We can contrast existing solid‐state lasers operating by nonlinear wavelength conversion to the direct bandgap semiconductor lasers in terms of mate ...
... This talk focuses on contemporary approaches to create compact lasers which can continuously span the full red‐green‐blue visible range. We can contrast existing solid‐state lasers operating by nonlinear wavelength conversion to the direct bandgap semiconductor lasers in terms of mate ...
Practice Problems_sources
... reflectivities are0.32 at each end. What is the optical gain at the lasing threshold? (Ans. 32.78 cm-1 ) (b) If one end of the lasers is coated with a dielectric reflector so that its reflectivity is now 90%, what is the optical gain at the lasing threshold? (Ans: 22.44 cm-1 . Notice that required g ...
... reflectivities are0.32 at each end. What is the optical gain at the lasing threshold? (Ans. 32.78 cm-1 ) (b) If one end of the lasers is coated with a dielectric reflector so that its reflectivity is now 90%, what is the optical gain at the lasing threshold? (Ans: 22.44 cm-1 . Notice that required g ...
Laser pumping
Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. The energy is absorbed in the medium, producing excited states in its atoms. When the number of particles in one excited state exceeds the number of particles in the ground state or a less-excited state, population inversion is achieved. In this condition, the mechanism of stimulated emission can take place and the medium can act as a laser or an optical amplifier. The pump power must be higher than the lasing threshold of the laser.The pump energy is usually provided in the form of light or electric current, but more exotic sources have been used, such as chemical or nuclear reactions.