Device for directly doubling frequency of locking mold photonic crystal semiconductor laser to generate low wave length laser

Abstract

The invention discloses a device for directly doubling frequency of locking mold photonic crystal semiconductor laser to generate low wave length laser, comprising a mold photonic crystal semiconductor laser and a frequency-doubling crystal connected to the mold photonic crystal semiconductor laser, wherein the locking mold photonic semiconductor laser is of an laminating structure and comprises an N-type substrate, a lower electrode, an N-type limitation layer, an photonic crystal, an active layer, a P -type limitation layer, a P-type covering layer, an electric insulation layer, and an upper electrode. The lower electrode is made on the lower surface on the N-type substrate; the N-type limitation layer is made on the upper surface of the N-type substrate; the phonic crystal is made on the N-type limitation layer; the active layer is made on the phonic crystal; the P-type limitation layer is made on the active layer, and the P type limitation layer has a projected ridge structure in the middle; the P-type covering layer is made on the ridge structure of the P type limitation layer; an insulation groove is formed in the middle of the P type cover layer on the ridge structure; the electric insulation layer is formed on the P-type limitation layer on the two sides of the ridge structure and on the P-type limitation layer inside the insulation groove; and the upper electrode is formed on the P-type cover layer.

Description

technical field [0001] The invention relates to the technical field of semiconductor optoelectronic devices, in particular to a mode-locked photonic crystal semiconductor laser direct frequency doubling laser device for realizing short-wavelength laser. Background technique [0002] Due to the characteristics of high photon energy, low diffraction limit, and naked eye resolution, short-wavelength lasers have a wide range of applications in the fields of laser display, optical information storage, and laser printing. Early short-wavelength lasers were generated by gas lasers, but gas lasers face disadvantages such as large volume, low efficiency, and poor reliability. The use of all-solid-state laser frequency doubling can improve the power and stability of short-wavelength lasers, but it also faces problems such as low efficiency. Moreover, the short-wavelength laser required for laser display applications has relatively poor coherence, and the application of all-solid-stat...

AI Technical Summary

Problems solved by technology

At present, different semiconductor epitaxy materials can be used to directly generate short wavelengths (such as red, green, blue, etc.). Low-level shortcomings, technology is mainly in the hands of a few companies

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