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Study on 940nm Semiconductor Laser Pump Solid-State Laser

Author: LouLi
Tutor: QuZuo
School: Changchun University of Science and Technology
Course: Physical Electronics
Keywords: LDA side-pumped Yb: YAG crystal All - solid-state lasers Output transmittance
CLC: TN248
Type: Master's thesis
Year: 2010
Downloads: 106
Quote: 0
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Abstract


The rapid development of semiconductor lasers has led to the development of solid-state laser materials technology and frequency conversion technology , people gradually found Yb: YAG crystal used Nd : YAG crystal is more suitable for pumped Yb: YAG crystal has a wide absorption bandwidth , energy level the advantages of long life , and its absorption wavelength of 940nm semiconductor laser wavelength to match , and become a research focus of the laser field . This thesis analyzes the theoretical works of all - solid-state lasers , laser pump source , pump and used laser crystals, etc. , and focus on the optical properties of Yb: YAG crystal . According to the quasi- three-level theoretical derivation of the threshold power and output power , and solving the best output transmittance and output power . Finally , based on the above theoretical analysis to determine the experimental apparatus , the use of 940nm semiconductor laser array (LDA) side-pumped Yb: YAG crystal , 3.85W 1030nm laser output - optical conversion efficiency of 18.4% .

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