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Phase change phenomena during high power laser
Phase change phenomena during high power laser

Femtosecond Laser Spectroscopy
Femtosecond Laser Spectroscopy

... Laser pulses on the order of 10GW/cm2 can cause damage to the stimulated gain medium by nonlinear processes such as self focusing, so amplification must be done in a little bit different way. ...
Chapter 12 Plane Waves at Boundaries and in Dispersive Media
Chapter 12 Plane Waves at Boundaries and in Dispersive Media

... One of the measurements that is easily made on transmission systems is the relative amplitude of the electric or magnetic field intensity through use of a probe. A small coupling loop will give an indication of the amplitude of the magnetic field, while a slightly extended center conductor of a coax ...
FE-2016-01072-R2-Appendix
FE-2016-01072-R2-Appendix

... Stoddard & Prum 2008). In this model, the tetrahedron depicts the avian colour vision space in which each point represents each measured colour as much as it is the excitation of each photoreceptor type (Stoddard & Prum 2008). The central point is the achromatic origin, and each vertex depicts the m ...
Chapter 3 - Optoelectronics Research Centre
Chapter 3 - Optoelectronics Research Centre

H2 Raman overtone intensities measured for
H2 Raman overtone intensities measured for

Indicatrix - University of Florida
Indicatrix - University of Florida

Sub-wavelength grating for enhanced ring resonator biosensor
Sub-wavelength grating for enhanced ring resonator biosensor

... scale [2, 3] for optical multiplexing [4], modulation [5], and biosensing [6]. While the large index contrast among the silicon waveguide, substrate, and cladding, helps to confine and guide the light, a portion of its electric field extends outside the waveguide as an evanescent field. This field i ...
Paper
Paper

Plasmonic Metamaterials
Plasmonic Metamaterials

Towards Multimaterial Multifunctional Fibres that See, Hear, Sense and Communicate
Towards Multimaterial Multifunctional Fibres that See, Hear, Sense and Communicate

... Although metallic mirror reflectors have been known for a long time and are attractive because they reflect light over a wide angular range, their usage in optics has been limited because of high optical losses. Multilayer interference filters, on the other hand, have low optical losses but exhibit ...
Light propagates in the form of waves
Light propagates in the form of waves

plse2oximetry - Pheonix India
plse2oximetry - Pheonix India

... • This is a measure of ratio between HbO2 and sum of oxygenated and reduced Hb. ...
Quasi Light Fields: Extending the Light Field to Coherent Radiation
Quasi Light Fields: Extending the Light Field to Coherent Radiation

Holographic 3-D Displays - Electro-holography within
Holographic 3-D Displays - Electro-holography within

Optical switches
Optical switches

... be suppressed - this can be achieved by different approaches: • cleaved-coupled cavity (C3) lasers • external cavity lasers p p n p p p n • distributed Bragg reflector (DBR) lasers Active Active • distributed feedback (DFB) lasers layer layer Λ Diffraction • The most common light sources gratings fo ...
Introduction to optical fibers
Introduction to optical fibers

... highest in the center). The waves traveling in the layers further from the core axis have to overcome longer distance, but their phase velocity is higher due to the lower refraction index close to core-cladding interface. This means that all waves traveling along different paths reach the end of the ...
Second Harmonic Generation Technique and its Applications
Second Harmonic Generation Technique and its Applications

Semiconductor Lasers: Device Physics and Applications
Semiconductor Lasers: Device Physics and Applications

evanescent wave based biosensors
evanescent wave based biosensors

DesignCon 2013 Advances in Onboard Optical Interconnects: A New Generation of Miniature Optical
DesignCon 2013 Advances in Onboard Optical Interconnects: A New Generation of Miniature Optical

... Silicon Photonics uses a different approach of integration on a Silicon substrate. Obviously, electrical circuits can be manufactured on silicon, but also photo detectors, modulators and optical waveguides are needed to interconnect them optically. The promise is that all the elements can be monolit ...
[pdf]
[pdf]

Untitled
Untitled

... propagation medium, particles, or in the interface between two media.” “Scattering is a general physical process whereby some forms of radiation, such as light or moving particles, for example, are forced to deviate from a straight trajectory by one or more localized non-uniformities in the medium t ...
HERCULES_Neutron_reflectivity
HERCULES_Neutron_reflectivity

... time of each neutron at the detector relative to the start of each pulse, with shorter wavelengths arriving first and corresponding to high values of q. On steady state reactor beams, a pair of mechanical choppers is used to define a pulse of neutrons, with separation and length of individual pulses ...
Effect of ABCD transformations on beam paraxiality
Effect of ABCD transformations on beam paraxiality

... The concept of paraxiality applied to optical beams refers to how accurate is the paraxial approximation (PA) for describing the propagation of a light beam through a given optical system. The ondulatory foundation of the PA is based on the assumption that the complex amplitude of the field slowly v ...
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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.
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