Abstract
High-power red laser are of great interest in the fields of medical application, laser display and also as a pumping source for tunable lasers such as Cr:LiSAF. This letter reports the generation of a 12W Q-CW red laser beam by intracavity frequency-doubling of a Nd:YAG laser operating at 1.3μm with a KTP crystal. A laser module that consisting of a Nd:YAG rod side-pumped by thirty 20W LDs of a triangle radial pump geometry, a acousto-optic Q switch and a KTP crystal were used in the experiment. Because the efficiency of SHG is sensitive to the type II phase-matching angles of KTP, we calculate the value of phase-matching angles according to several of Sellemier equations of KTP, and modify the phase-matching angles to θ=59.9° and φ=0° by experiment. The maximum average power of 12W of red laser is achieved at 10KHz when the pump power of LDs is about 470 W.
Original language | English |
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Article number | 91 |
Pages (from-to) | 449-452 |
Number of pages | 4 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 5627 |
DOIs | |
State | Published - 2005 |
Event | High-Power Lasers and Applications III - Beijing, China Duration: 8 Nov 2004 → 11 Nov 2004 |
Keywords
- Frequency-doubling
- KTP crystal
- Ld pumped laser
- Nd:YAG
- Red laser