Qn_Bank1
... 3. What is a gas laser? Explain the working of He-Ne laser with relevant diagram.(8) 4. Describe the construction and working of Nd-YAG laser.(8) 5. What is a molecular gas laser? Explain the modes of vibrations of CO 2 molecule and describe the construction and working of a CO2 laser with a neat sk ...
... 3. What is a gas laser? Explain the working of He-Ne laser with relevant diagram.(8) 4. Describe the construction and working of Nd-YAG laser.(8) 5. What is a molecular gas laser? Explain the modes of vibrations of CO 2 molecule and describe the construction and working of a CO2 laser with a neat sk ...
High refractive index Fresnel lens on a fiber fabricated by
... The lens master mold was fabricated using a gallium FIB integrated into a Zeiss Orion NanoFab microscope. First and a second generation replicas of the master mold were created with a commercial UV-curable polymer (Ormocomp, Micro Resist Technology) [19]. The second replica, which has the same litho ...
... The lens master mold was fabricated using a gallium FIB integrated into a Zeiss Orion NanoFab microscope. First and a second generation replicas of the master mold were created with a commercial UV-curable polymer (Ormocomp, Micro Resist Technology) [19]. The second replica, which has the same litho ...
Wave Equation - web page for staff
... D = 5 cm are located in plane z = 0 and z = L. A Gaussian beam of diameter 0.5 cm to e-2 relavtive power density for λ = 0.63 μm is incident on the first lens. The value of L is constained such that the e-2 relative power density locus is contained within the aperture of the second lens. ...
... D = 5 cm are located in plane z = 0 and z = L. A Gaussian beam of diameter 0.5 cm to e-2 relavtive power density for λ = 0.63 μm is incident on the first lens. The value of L is constained such that the e-2 relative power density locus is contained within the aperture of the second lens. ...
2.71/2.710 Optics
... oblique incidence Minimum path principle (aka Fermat’s principle) a) Consider virtual source P” instead of P b) Alternative path P”O”P’ is ...
... oblique incidence Minimum path principle (aka Fermat’s principle) a) Consider virtual source P” instead of P b) Alternative path P”O”P’ is ...
Di raction and Interference PRECAUTION
... This experiment is greatly facilitated by the use of a laser as a light source. The laser light is highly monochromatic and coherent. Coherence means that there are surfaces, in this experiment approximately planes, in which the light is in phase. When such light falls on a ~ oscillates in phase ove ...
... This experiment is greatly facilitated by the use of a laser as a light source. The laser light is highly monochromatic and coherent. Coherence means that there are surfaces, in this experiment approximately planes, in which the light is in phase. When such light falls on a ~ oscillates in phase ove ...
2011 Research Poster
... absorption signal. The Dichroic-Atomic-Vapor-LaserLocking technique (DAVLL) signal allows us to lock the laser at frequency up to a few GHz away from the transition peaks. ...
... absorption signal. The Dichroic-Atomic-Vapor-LaserLocking technique (DAVLL) signal allows us to lock the laser at frequency up to a few GHz away from the transition peaks. ...
Physics 116 Mirrors and ray tracing
... –! Now, reflected rays never actually converge, but appear to converge if extended behind the mirror (appear to come from virtual image) •! Person viewing mirror would “see” magnified image behind it –! This is a “shaving mirror” or magnifying mirror –! You have to put your face close to it to see y ...
... –! Now, reflected rays never actually converge, but appear to converge if extended behind the mirror (appear to come from virtual image) •! Person viewing mirror would “see” magnified image behind it –! This is a “shaving mirror” or magnifying mirror –! You have to put your face close to it to see y ...
OCS`08
... including 3 000 researchers). It can lean on several Universities or grandes écoles providing education in optics and photonics at all levels. The South of France represent 20% of French R&D in optics. ...
... including 3 000 researchers). It can lean on several Universities or grandes écoles providing education in optics and photonics at all levels. The South of France represent 20% of French R&D in optics. ...
幻灯片 1 - 长安大学精品课程网站
... wave nature of light and cannot be understood on the basis of rays. Optical effects that depend on the wave nature of light are grouped under the heading physical optics. In this chapter we'll look at interference phenomena that occur when two waves combine. The colors seen in oil films and soap bub ...
... wave nature of light and cannot be understood on the basis of rays. Optical effects that depend on the wave nature of light are grouped under the heading physical optics. In this chapter we'll look at interference phenomena that occur when two waves combine. The colors seen in oil films and soap bub ...
Microsoft Word Format - University of Toronto Physics
... approximately 45° so that the reflected light is incident on the pinhole. 2. Align the track. Take everything from the track and put up the bar pointer (one that has a sharp tip on the top). The laser beam needs to be centered vertically on the pointer and pinhole everywhere along the track. If nece ...
... approximately 45° so that the reflected light is incident on the pinhole. 2. Align the track. Take everything from the track and put up the bar pointer (one that has a sharp tip on the top). The laser beam needs to be centered vertically on the pointer and pinhole everywhere along the track. If nece ...
High-speed optical frequency-domain imaging
... radar’) where individual spectral components of low coherence light are detected separately by use of a spectrometer and a charge-coupled device (CCD) array [9,10]. The fast readout speed of CCD arrays and the signal-to-noise (SNR) advantage of the spectral-domain OCT [11,12] make it promising for s ...
... radar’) where individual spectral components of low coherence light are detected separately by use of a spectrometer and a charge-coupled device (CCD) array [9,10]. The fast readout speed of CCD arrays and the signal-to-noise (SNR) advantage of the spectral-domain OCT [11,12] make it promising for s ...
How Do Lenses and Mirrors Affect Light?
... kinds of images. What are some objects that use lenses? What are the lenses being used for in these objects? Why do lenses work the way they do? Recall what you learned about light in Lesson 1. • Light always travels in straight lines. • Light travels more slowly through glass or plastic than air. • ...
... kinds of images. What are some objects that use lenses? What are the lenses being used for in these objects? Why do lenses work the way they do? Recall what you learned about light in Lesson 1. • Light always travels in straight lines. • Light travels more slowly through glass or plastic than air. • ...
... conducted for three samples with different phase gradients of 3.6, 4.0, and 4.4 rad/mm. The measured refraction angles agree well with the theoretical predictions (solid curves). The angles are the same for both the left and right circularly polarized light. (Inset) Schematic depiction of the light ...
Time-of-flight optical ranging system based on time
... three-dimensional coordinate data from object surfaces to provide quantitative information about a target, scene, or environment. Such systems have applications in areas as diverse as precision component inspection, automated assembly, process control, robot navigation, cartography, and satellite ra ...
... three-dimensional coordinate data from object surfaces to provide quantitative information about a target, scene, or environment. Such systems have applications in areas as diverse as precision component inspection, automated assembly, process control, robot navigation, cartography, and satellite ra ...
optical/photonic bandwidth
... to the inverse relationship of frequency and wavelength. The conversion factor between gigahertz and nanometres depends on the centre wavelength or frequency. For converting a—small—wavelength interval into a frequency interval, the equation can be used. ...
... to the inverse relationship of frequency and wavelength. The conversion factor between gigahertz and nanometres depends on the centre wavelength or frequency. For converting a—small—wavelength interval into a frequency interval, the equation can be used. ...
Presentation PPT
... electromagnetic wave in a PCF can be regarded as a modified total internal reflection mechanism. 2. Photonic bandgap mechanism: If the central defect is realized by inserting a central air capillary, which has a diameter different than other capillaries (usually bigger), then we can obtain a photoni ...
... electromagnetic wave in a PCF can be regarded as a modified total internal reflection mechanism. 2. Photonic bandgap mechanism: If the central defect is realized by inserting a central air capillary, which has a diameter different than other capillaries (usually bigger), then we can obtain a photoni ...
Understanding Polarization
... called the “law of reflection.” The angle of the transmitted (or refracted) ray, t, is related to the angle of incidence by the well-known “Snell’s Law” relationship: ni sin i nt sin t . It turns out that s-polarized light is always more highly reflected than p-polarized light. In fact, at a sp ...
... called the “law of reflection.” The angle of the transmitted (or refracted) ray, t, is related to the angle of incidence by the well-known “Snell’s Law” relationship: ni sin i nt sin t . It turns out that s-polarized light is always more highly reflected than p-polarized light. In fact, at a sp ...
Waves Notes - Animated Science
... This picture shows the EM Spectrum. In the middle is visible light. Between 400nm and 700nm (nano metres or 1x10-9m = 0.000000001m). The eye is sensitive to this light and by monitoring the reflection of light from the objects around us we are able to distinguish the distance of the objects and the ...
... This picture shows the EM Spectrum. In the middle is visible light. Between 400nm and 700nm (nano metres or 1x10-9m = 0.000000001m). The eye is sensitive to this light and by monitoring the reflection of light from the objects around us we are able to distinguish the distance of the objects and the ...
Statistical Optics. Second Edition. Wiley Series in Pure and Applied... Brochure
... covers the necessary background in statistics, statistical properties of light waves of various types, the theory of partial coherence and its applications, imaging with partially coherent light, atmospheric degradations of images, and noise limitations in the detection of light. New topics have bee ...
... covers the necessary background in statistics, statistical properties of light waves of various types, the theory of partial coherence and its applications, imaging with partially coherent light, atmospheric degradations of images, and noise limitations in the detection of light. New topics have bee ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.