Te, cadmium and Hg optical range limiter with the continuously adjusting output light intensity of the passive saturated clamp
An output light, passive technology, applied in the structure/shape of lasers, laser parts, optical resonators, etc., can solve the problem that the output light intensity cannot be continuously adjusted.
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[0015] Below with incident wavelength 7920nm as design wavelength, in conjunction with accompanying drawing to the concrete of optical limiter of the present invention
[0016] The implementation mode is described in detail:
[0017] The resonant cavity 1 of the HgCdTe optical limiter of the present invention is made up of a pair of distributed Bragg reflectors 2, and (HL)m or (LH)m dielectric film 3 is plated on two opposite mirror surfaces, and reflector substrate material is Ge, H is the high refractive index film layer SiO, L is the low refractive index film layer PbTe, its refractive index is 2.35 and 5.55 respectively, m is the number of high and low refractive index film layers alternately stacked, m=2, and the optical thickness of the film layer is lambda 0 / 4, the resonant cavity length is 7.92mm. The HgCdTe photodiode 4 is placed in the resonant cavity, and the space charge region 5 in the p-n junction of the photodiode is at the center of the resonant cavity, so t...
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