Author Affiliations
Abstract
1 College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072
2 School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072
We derive the threshold pump intensity for a singly resonant intracavity optical parametric oscillator (IOPO) based on a temporal coupled field model. Particular attention is paid to the dependence of the intracavity singly resonant OPO (SRO) threshold intensity on the signal wave output coupling. Meanwhile, a Nd:YAG laser pumped KTiOPO4 (KTP) IOPO for eye-safe laser output is studied experimentally. The experiment is performed with four signal wave output reflectivities of 60%, 70%, 80%, and 90%, respectively. The measured values are in good agreement with the theoretical results. With an output coupler reflectivity of 80%, a peak power of 70 kW at 1572 nm has been obtained at a repetition rate of 3.5 kHz. The pulse width is 4.9 ns. Such investigation is helpful to identifying suitable operational regime of low pump intensity.
光学参量振荡 阈值 Q开关 侧面泵浦 190.4970 Parametric oscillators and amplifiers 140.3540 Lasers, Q-switched 140.3480 Lasers, diode-pumped Chinese Optics Letters
2008, 6(3): 03207
Yuye Wang 1,2,3Degang Xu 1,2,3Yizhong Yu 1,2,3Wuqi Wen 1,2,3[ ... ]Jianquan Yao 1,2,3
Author Affiliations
Abstract
1 College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University
2 Cooperated Institute of Nankai University and Tianjin University
3 Key Laboratory of Optoelectronic Information and Technical Science (Ministry of Education), Tianjin University, Tianjin 300072
We report a high-peak-power, high-repetition-rate diode-side-pumped Nd:YAG Q-switched intracavity optical parametric oscillator (IOPO) at 1.57 microns with a type-II non-critically phase-matched x-cut KTP crystal. The average power of 1.15 W at 1.57 microns is obtained at 4.3-kHz repetition rate. The peak power of the pulses amounts to 33.4 kW with 8-ns duration. The average conversion efficiency from Q-switched 1.064-micron-wavelength input power to OPO signal output power is up to 10.5%.
固体激光 光学参量振荡 侧面泵浦 侧面抽运 KTP晶体 Q开关 190.4970 Parametric oscillators and amplifiers 140.3480 Lasers, diode-pumped 160.4330 Nonlinear optical materials 140.3540 Lasers, Q-switched Chinese Optics Letters
2007, 5(2): 93
Xin Ding 1,2,3,*Yue Zou 1,2,3Lei Zou 1,2,3Hongmei Ma 1,2,3[ ... ]Jianquan Yao 1,2,3
Author Affiliations
Abstract
1 College of Precision Instrument and Opto-Electronics Engineering, Institute of Laser and Opto-Electronics, Tianjin University
2 Key Laboratory of Opto-Electronics Information Science and Technology, Ministry of Education
3 Cooperated Institute of Nankai University and Tianjin University, Tianjin 300072
An all-solid-state quasi-continuous-wave dispersion cavity tunable Ti:sapphire laser pumped by a laser diode pumped frequency-doubled Nd:YAG laser is reported. Using a dense flint glass prism as the dispersion element, a tuning range from 730 to 880 nm with the linewidth of 3 nm and the pulse width of 17.2 ns was obtained. The maximum output power of this laser system was 5.6 W at 786.3 nm corresponding to an optical-to-optical conversion efficiency of 25.5% under the pump power of 22 W.
140.3580 lasers solid-state 140.3590 lasers titanium 140.3480 lasers diode-pumped 140.3410 laser resonators Chinese Optics Letters
2006, 4(2): 0296
Author Affiliations
Abstract
1 Optoelectron. Info. Sci. Technol. Lab, Inst. Lasers and Optoelectron., College of Precision Instru. Optoelectron. Eng., Tianjin University, Tianjin 300072
2 College of Mechanism Engineering, Hebei University of Technology, Tianjin 300130
3 State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
A continuous wave (CW) Nd:YAG infrared laser at 1319 nm is reported in this paper. The energy level of 1319-nm wave was analyzed. The repression of 1064-nm lasing and enhancement of 1319-nm output power were discussed. Mirror coating and cavity structure were studied and a maximum CW output power of 43 W at 1319 nm was achieved in experiments.
140.3580 lasers solid-state 140.3070 infrared and far-infrared lasers Chinese Optics Letters
2003, 1(11): 11661
Author Affiliations
Abstract
1 Optoelectron. Info. Sci. Technol. Lab, Inst. Lasers and Optoelectron., College of Precision Instru. Optoelectron. Eng., Tianjin University, Tianjin 300072
2 College of Mechanism Eng., Hebei University of Technology, Tianjin 300130
3 State Key Laboratory of Laser Technol., Huazhong University of Science and Technology, Wuhan 430074
A quasi-continuous-wave intracavity frequency-doubled Nd:YAG laser which operates at 660 nm is studied. By using a flat-flat laser cavity, 2 Kr-lamps, KTP crystal and an acousto-optically Q-switch, 2-W output power at 660 nm is obtained. The relationship between laser cavity length and output power is analyzed.
140.3540 lasers Q-switched Chinese Optics Letters
2003, 1(5): 05289
本文报道了对NaF:Mg~(2+)晶体中(F_2~+)~*心进行的实验研究,实验中观察到在F_2~+心和(F_2~+)~*心之间存在着一个转型的过程.其转型的速率与掺杂的二价金属种类有关,而当掺杂浓度不太低时同掺杂的浓度无关.实验还发现(F_2~+)~*心的热漂白产物同Z_4心有相同的性质.根据实验结果本文提出了(F_2~+)~*心是由一个F_2~+心同一个杂质-空穴对联接而成的可能模型.
