LD side-pumped intracavity frequency-doubled high power Nd:YAG green laser based on acousto-optic Q-switch

All-solid-state green lasers with high average power( >10 W) and high pulse repetitionfrequency rate havebeen requiredfor various applications inindustry,medi-cine ,scientific researchandentertainments[1].Sometypi-cal applications include processing of ma…     

采用声光Q开关调制的脉冲Nd：YAG激光器

采用声光调制器（AOM）对脉冲Nd:YAG激光进行腔内调制，提高激光脉冲的峰值功率。获得了脉宽200ns的激光脉冲列，脉冲列的重复频率为5-50kHz，脉冲能量为30－80mJ，最大脉冲峰值功率为400kW，光束质量为3mm mrad。     

Q开关Nd:YAG激光器的优化设计

本文根据速率方程,推导出Q开关Nd:YAG激光器效率与器件参数的关系式.通过合理选择输出镜的反射率可以提高激光器性能.文中还给出了优化调Q激光器效率的简单方法.     

计量用脉冲Nd：YAG倍频激光器及其电源

介绍了脉冲Nd:YAG倍频激光器双波长（1064／532nm）3种输出的激光光路。1064nm输出的动静比可达0.40；KTP晶体外腔倍频效率可达0.50。介绍了稳定可靠的调Q电路、逻辑控制电路和开关电源的主电路及其参数计算。     

LD泵浦Nd：YAG946nmCW激光器研究

文章简述了Nd:YAG946nm激光器特别是LD泵浦的Nd:YAG946nm激光器的发展,在国内首次实现了LD泵浦Nd:YAG946nm激光器的连续运转,报道了初步的实验结果并对此进行了详细的分析,提出了改进方案。     

重复频率40Hz高能量倍频调Q Nd：YAG激光器

在对圆棒形ＹＡＧ棒内热效应进行详细分析的基础上，报导了一种闪光灯泵浦、调Ｑ倍频ＹＡＧ激光器。当重复频率为４０Ｈｚ时，１．０６４μｍ最大单脉冲能量为４６２ｍＪ，０．５３２μｍ最大单脉冲能量为２５０ｍＪ；当每秒一次工作时，０．５３２μｍ激光能量为３８０ｍＪ／脉冲，倍频效率大于６９％。     

Experimental study of thermal lensing of Nd：YAG laser

Beamfocusing and higher-order wavefront distortiondue to heat dissipationinalaser gain mediumarei mpor-tant considerationsinthe design of solid-statelasers be-cause wavefront distortion can profoundly influence theperformance of a givenlaser design.Althou…     

Experimental study of thermal lensing of Nd：YAG laser

Beamfocusing and higher-order wavefront distortiondue to heat dissipationinalaser gain mediumarei mpor-tant considerationsinthe design of solid-statelasers be-cause wavefront distortion can profoundly influence theperformance of a givenlaser design.Althou…     

Diode-pumped Nd: YAG/LBO CW yellow laser at 588.9 nm

Inrecentyears,diode pumpedall solid statelasersin blue[1],green[2]andred[3]spectralreginsofintracavity frequencydoublingweredeveloped,becauseoftheirpromisingadvantages,suchasdesignsimplicity,highef ficiency,structurecompactness.Inmedicine,opticaltes ting,andcolordisplaytechnology[4],laserradiationfrom 550nmto650nmisrequired.Inparticular,theyellow laserat588.9nmradiationisveryclosetotheSodium D2atwavelength589nm,thereforeitwillbecomeani dealsourceinsteadofSodiumlamp.Atpresent,thesol id state…     

Thermal lens measurement of a LD end-pumped Nd：GdVO4 laser with stable resonator by a slit-scanning method

Recently,some feasible ways have been put forwardsto determine the thermal focal lengthfTof gain mediumin end-pumped solid-state laser ,such as CCD-photo-graph[1]and stable cavity condition[2].However ,thismethodinvolves the complicated experi mental setup andcannot be directly applied for high power pump due tothe saturation effect of CCD.Stable cavity conditionmethodis relatively si mple,but since there is no laseroutput when the stable cavity just turns into unstablesome parts of energy o…     

Diode-pumped actively Q-switched Nd： YAG laser at 946 nm

A diode-pumped Nd： YAG acousto-optically（A-O） Q-switched laser at wavelength 946 nm formed with a simple plane-plane cavity has been demonstrated. The maximum average output power was 850 mW. The highest peak power was 531 W with the pulse repetition rate of 20 kHz and pulse width of 80 ns at the incident pump power of 19.5 W.     

Laser-diode pumped Nd: GdVO4 ultraviolet laser with LBO frequency tripling

We have demonstrated a laser-diode pumped Nd.GdVO4 extra-cavity frequency tripling ultraviolet laser with a LBO crystal in this paper. Under the acousto-optic （A-O） Q-switched operation, we have obtained 355 nm ultraviolet laser,with pulse width of 25 ns and pulse repetition rate of 20 kHz. By using a type Ⅰ non-critical phase-matched LBO crystal, the SHG output power of 822 mW is achieved at the incident pump power of 16 W. The output power of 355nm UV laser is 260mW with a type Ⅱ phase-matched LBO crystal,and the conversion efficiency （1 064 nm-355 nm） is 5.9 %. The power stability of 355 nm laser is 1.7% in 1 h.     

Supercontinuum generation pumped by a regeneratively mode-locked fiber laser

Supercontinuum（SC） generation in a dispersion-shifted fiber（DSF） pumped by a 10 GHz regeneratively mode-locked fiber laser（RMLFL） is presented. Optimization of pump wavelength leads to a 20 dB bandwidth of 58.73 nm,which covers the whole C band and part of L band. Using an angle-tuning thin film filter, multi-wavelength and pico-second pulse trains of low chirp could be chosen from the SC spectrum. Amplified spontaneous emission（ASE） induced degeneration of the achieved pulse trains is observed and discussed.     

High power collimated diode laser stack

Compared with other kinds of lasers ,high power di-odelaser has many advantages suchas highelectro-opti-cal efficiency,compact structure,longlifeti me andso on.As alaser source,diode laser is sufficient for many dif-ferent applications suchas pumping of s…     

High stable power control of a laser diode

For a high precise sensing and measuring system,theerror of measurement resulting fromthe fluctuation ofthe light source must be considered[1-3].The main noisesources include fluctuation of current source,self-heat ,aging and theintrinsic noises of a lase…