Application of Hydrothermal KTP in LD Side Pumped Nd:YAG Internally Frequency Tripled 355 nm Laser

Pan Jun; Zhu Siqi; Chen Zhenqiang; Yang Qiguo; Wang Su′e

doi:10.3788/lop49.081405

Journals >Laser & Optoelectronics Progress >Volume 49 >Issue 8 >Page 81405 > Article

Laser & Optoelectronics Progress
Vol. 49, Issue 8, 81405 (2012)

Application of Hydrothermal KTP in LD Side Pumped Nd:YAG Internally Frequency Tripled 355 nm Laser

Pan Jun^1,*, Zhu Siqi¹, Chen Zhenqiang^1,2, Yang Qiguo¹, and Wang Su′e¹

Author Affiliations

¹[in Chinese]

²[in Chinese]

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DOI: 10.3788/lop49.081405 Cite this Article Set citation alerts

Pan Jun, Zhu Siqi, Chen Zhenqiang, Yang Qiguo, Wang Su′e. Application of Hydrothermal KTP in LD Side Pumped Nd:YAG Internally Frequency Tripled 355 nm Laser[J]. Laser & Optoelectronics Progress, 2012, 49(8): 81405 Copy Citation Text

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Abstract

A 355 nm ultraviolet laser with hydrothermal KTP is demonstrated. A high power ultraviolet laser with high beam quality at 355 nm is obtained by internally frequency tripling of a diode side-pumped acousto-optic (AO) Q-switched Nd:YAG laser. Type II phase-matched hydrothermal KTP and LBO crystals are used for the second harmonic generation and the third harmonic generation, severally. Using the V-shaped resonator cavity, under the pump power of 93.09 W, 4.133 W average output power at 355 nm is obtained at 4.9 kHz, corresponding to the pump-to-ultraviolet conversion efficiency of 4.44%.

Keywords

acousto-optic Q-switch hydrothermally grown KTP intracavity frequency tripling laser ultraviolet laser