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Prism definition:A transparent optical device that can refract or reflect light.An optical prism is a transparent device in wh
Coherence Time definition:The measure of temporal coherence is the time required to characterize significant attenuation of coherence.C
Diffraction Grating definition:An optical element that contains periodic structures that cause diffraction of light beams.A diffraction grat
Diffraction-Limited Beam Definition:A beam whose divergence angle reaches the theoretically achievable minimum for a given beam waist radius. For
Unstable Resonator definition:For optical resonators with dynamically unstable lateral beam displacement.According to the design details, o
Refraction definition:The phenomenon where a beam of light changes direction when it travels from one medium to another. Figure 1:
Refractive Index definition:The factor by which the speed of light decreases in a medium.The refractive index of transparent media is the
Diameter-Divergence Product definition：The product of the diameter of the laser beam (at the waist) and the divergence angle。The product of the diam
Neutral Density Filter definition:An optical attenuator with an attenuation factor close to a constant in a large wavelength range.A neutral de
Collimated Beam definition:A laser beam with a very small divergence angle.A collimated beam refers to a beam of light (usually a laser
Ultraviolet Light definition:Invisible light with a wavelength less than about 400nm.Ultraviolet light is light with a wavelength less tha
Spectrometer definition:A device for recording spectra.A spectrometer is an instrument used to record the spectrum of a light source.
Mirror Definition:A device that can reflect light. A mirror is an optical device capable of reflecting light. However, strictly
Waveplate definition:A transparent sheet with specific birefringence, used to change the polarization state of light.A waveplate (
Wavevector definition:A vector that describes the direction of wave propagation and the phase delay per unit length.The wave vector

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