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Optical Noise Charactertistics of CW Quantum Cascade Laser with Built-in Lens

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Optical Noise Charactertistics of CW Quantum Cascade Laser with Built-in Lens

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In spectral single-mode laser applications, suppressing optical interference will greatly contribute to improving the S/N of the system. The emitted laser light is reflected a little by the optical elements of the system such as lenses and detectors. Interference occurs because the light becomes strong at the point where the traveling wave and the reflected wave are in phase, and the light becomes weak. at the part where the two waves have opposite phases.

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