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Research on High-power All-solid-state Nd:YAG/KTP Red Laser

Author: LiJun
Tutor: YuYiZhong
School: Tianjin University
Course: Physical Electronics
Keywords: All solid Nd: YAG Quasi-continuous KTP Class Ⅱ match Red
CLC: TN248
Type: Master's thesis
Year: 2004
Downloads: 197
Quote: 0
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Abstract


In this thesis, high power LD side -pumped Nd : YAG / KTP red laser theoretical analysis and experimental research . High power solid-state red laser , laser show , laser medical and Cr: LiSAF laser pump source and has broad prospects for development . Increase the power of the red laser is the key issue in this large area laser display ; Also in the medical aspects of 660nm red light is the ideal light source for the treatment of early cancer . Currently available red laser power is relatively low, and unable to meet the practical application of the urgent need for high power red laser . High power solid state Nd: YAG / KTP red laser research is very theoretical significance and research value . The main content of this paper is as follows: 1) red laser applications and development status , cited several red lasers and their different ways to produce red light ; 2) Introduction of a Nd: YAG laser output wavelength characteristics and analysis of the Nd : YAG thermal effects , and experimental measurements of the thermal focal length ; 3 ) from both theoretical and experimental aspects of the KTP crystal in the of 1319nm at octave best match angle was studied . The matching angle is no unified conclusion KTP crystal dispersion equation , the matching angle numerical calculation ; experimental methods to identify the best match of the KTP crystal at 1319nm octave angle . The study has laid a solid foundation for the final high power red laser output . 4) LD side-pumped Nd : YAG intracavity doubling red laser experimental study . Domestic pump power 600W all-solid-state Nd: YAG pump components , acousto-optic Q-switch , Ⅱ class match KTP crystals , quasi-continuous level - cavity and two folded cavity cavity structure conditions output red laser experiment , analysis of Q baseband output the cause of instability in optical experiments and experiments in red . Ultimately in linear cavity under the conditions , the pumping current 18.6A obtained quasi-continuous red light output of 8.1W ; the folded cavity structure under conditions current 18.5A obtained maximum quasi- continuous red 11.5W . Currently , the results reached the leading domestic level.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser
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