Generation of UV radiation at 335.5 nm based on frequency-quadrupling of a diode-pumped Nd:YVO_4 laser 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Generation of UV radiation at 335.5 nm based on frequency-quadrupling of a diode-pumped Nd:YVO_4 laser

作者单位：	College of Physics and Electronics Shandong Normal University，College of Physics and Electronics Shandong Normal University，Department of Physics Heze University，College of Physics and Electronics Shandong Normal University Ji'nan 250014，Ji'nan 250014，Heze 274015，Ji'nan 250014 National Laboratory of Crystal Materials，Shandong University，Ji'nan 250100

摘要：	The generation of ultraviolet(UV)light at 335.5 nm based on frequency quadrupling of a diode-end- pumped Q-switched Nd:YVO_4 laser at 1342 nm was demonstrated.KTP crystal was used for generation of wavelength of 671 nm by intracavity doubling and LBO(BBO)crystal was exploited for the subsequent external fourth harmonic generation(FHG).With 6.3-W absorbed pump power and 10-kHz frequency repetition rate,the UV output power of 35 and 63 mW were obtained by using LBO and BBO as frequency quadrupling nonlinear crystals,respectively.The experimental results show that the conversion efficiency (red-UV)of 6.4% for BBO crystal is higher than that of 3.5% for LBO crystal,but the UV beam quality obtained by LBO crystal is better than by BBO crystal.
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