输出功率12W的全固态连续单横模1.34μm激光器

设计了全固态连续单横模1.34μm激光器。利用880nm激光二极管双端纵向泵浦Nd:YVO4复合晶体,在泵浦功率为51W时,获得12.4W的连续单横模1.34μm激光输出,光-光转换效率达到24.3%,激光器长期功率稳定性优于±1.2%(3h)。     

LD端面泵浦折叠腔Nd∶YVO4/LBO激光器

对端面泵浦Nd∶ YVO4构成的四镜Z型折叠腔结构进行了理论研究,合理调整谐振腔的参量关系,使谐振腔能够适应不同泵浦功率下激光晶体热焦距的变化,同时所设计的折叠腔还具有腔参量调整灵活等特点.以LBO晶体为倍频晶体,采用Ⅰ类角度调节位相匹配技术,在双端泵浦光功率为26 W时,成功地获得了4 W稳定的连续绿光输出.Nd∶ YVO4/LBO绿光激光器输出为4 W时的稳定性为1.3%,其光-光转换效率达到13%.     

输出功率5.2 W的全固态连续单横模671 nm红光激光器

设计了全固态连续单横模671 nm红光激光器.利用880 nm LD双端端面泵浦Nd:YVO4复合晶体,实现了均匀泵浦并改善了激光晶体热效应;考虑到影响倍频转化效率的各种因素,优化设计了Z字形四镜激光谐振腔,采用I类临界相位匹配晶体LBO作为腔内倍频晶体;当泵浦功率为42.5W时,获得了5.2W的连续单横模671 nm红光输出,光-光转化效率达到12.2％,激光器长期功率稳定性优于±2.5％(1 h).     

高稳定LD泵浦腔内倍频Nd∶YVO4/KTP连续绿光激光器

设计出一种能够较好地补偿激光晶体热效应的激光谐振腔,实现了高稳定LD单端泵浦KTP腔内倍频Nd∶YVO4连续绿光激光器·当晶体吸收的泵浦功率为24.56W时,532nm激光功率达到5.3W,光-光转换效率达到21.6%,激光模式为TEM00模·在输出功率5W左右时,激光器1h功率不稳定度优于0.6%·     

激光二极管泵浦Nd:YVO4/YVO4复合晶体绿光激光器

采用一种新型的Nd:YVO4/YVO4复合晶体,利用V型折叠腔,研究了高功率激光二极管端面泵浦的Nd:YVO4/YVO4复合晶体激光器基频1.06 μm及倍频532 nm激光的输出特性.当泵浦功率为24.6 W时,获得1.06 μm激光的最大输出功率为11.7 W,光-光转换效率为48%.当泵浦功率为17 W时,获得了5.32 W的绿光输出,光-光转换效率达到31.3%.     

激光二极管泵浦Nd∶YVO4/YVO4复合晶体绿光激光器

采用一种新型的Nd∶YVO4/YVO4复合晶体,利用V型折叠腔,研究了高功率激光二极管端面泵浦的Nd∶YVO4/YVO4复合晶体激光器基频1.06 μm及倍频532 nm激光的输出特性.当泵浦功率为24.6 W时,获得1.06 pm激光的最大输出功率为11.7 W,光-光转换效率为48%.当泵浦功率为17 W时,获得了5.32 W的绿光输出,光-光转换效率达到31.3%.     

LD端面泵浦折叠腔Nd：YVO4／LBO激光器

对端面泵浦Nd：YVO4构成的四镜Z型折叠腔结构进行了理论研究，合理调整谐振腔的参量关系，使谐振腔能够适应不同泵浦功率下激光晶体热焦距的变化，同时所设计的折叠腔还具有腔参量调整灵活等特点，以LBO晶体为倍频晶体，采用Ⅰ类角度调节位相匹配技术，在双端泵浦光功率为26W时，成功地获得了4W稳定的连续绿光输出，Nd：YVO4／LBO绿光激光器输出为4W时的稳定性为1．3％，其光—光转换效率达到13％。     

高稳定LD端面泵浦腔内倍频Nd∶YVO4/LBO连续红光激光器

设计出一种能够较好地补偿激光晶体热效应的激光谐振腔,实现了高稳定LD单端泵浦LBO腔内倍频Nd∶YVO4连续红光激光器.当晶体吸收的泵浦功率为24.56 W时,671 nm激光功率达到1.203 W,光-光转换效率4.9%,激光模式为TEM00模.在输出功率为1.08 W时,激光器1 h功率不稳定度为0.52%.     

高效率Nd:YVO4/LBO临界相位匹配脉冲绿光激光器

报道了一种利用激光二极管（LD）端面泵浦Nd:YVO4晶体,声光调Q,LBO临界相位匹配腔内倍频的高效率、小体积、风冷绿光激光器。分析了不同偏振光泵浦的情况下,激光晶体对泵浦光的吸收特性。由分析得出,采用部分偏振光泵浦,可以提高激光晶体对泵浦光吸收均匀性,改善基波畸变,获得高转换效率激光输出。实验中,在泵浦光功率为33 W、声光调Q重复频率为20 kHz时,得到脉宽为23.96 ns、平均功率为15 W的1064 nm基频光输出。经倍频后,得到平均功率为11.2 W的绿光输出,倍频效率为74.6%,总体光-光转换效率为34%。在输出功率为10 W时,测得1 h内输出功率不稳定度为0.512 2%,水平方向和竖直方向的光束质量因子M2分别为1.2和1.1。     

高稳定LD泵浦腔内倍频Nd∶YVO4/KTP连续绿光激光器

设计出一种能够较好地补偿激光晶体热效应的激光谐振腔，实现了高稳定LD单端泵浦KTP腔内倍频Nd∶YVO₄连续绿光激光器.当晶体吸收的泵浦功率为24.56 W时，532 nm激光功率达到5.3 W，光-光转换效率达到21.6％，激光模式为TEM00模.在输出功率5W左右时，激光器1 h功率不稳定度优于0.6％     

激光二极管抽运Nd∶YVO4/LBO腔内倍频5.3 W连续波激光器

报道了激光二极管双向抽运Nd∶YVO4 晶体、LBO腔内倍频、最大输出功率为 5 .3W的连续波绿光激光器。采用LBO晶体Ⅰ类非临界相位匹配 (NCPM) ,温度调谐 ,当抽运光功率为 2 0W时 ,获得了 5 .3WTEM0 0 模 5 32nm绿光输出 ,光光转换效率达 2 6 .5 %。并对绿光模式及输出功率随LBO晶体温度的变化关系进行了测量 ,与理论结果符合较好。     

LBO腔内和频593 nm激光器

报道了LD纵向泵浦NdYVO4晶体,经腔内和频得到593 nm激光输出的实验研究.采用一个线性平凹腔实现了1 064 nm和1 342 nm双波长连续波振荡,利用LBO腔内和频产生593 nm激光输出.在泵浦功率为1.4 W时得到593 nm的输出功率为70 mW.593 nm光束远场发散角小于1 mrad,光斑椭圆度为0.999,且具有低噪声输出特性.实验结果表明,该结构激光器是获得衍射极限全固体黄激光器的实用方法.     

An efficient continuous-wave YVO_4/Nd:YVO_4/YVO_4 self-Raman laser pumped by a wavelength-locked 878.9 nm laser diode

We report an efficient continuous-wave self-Raman laser at 1176 nm based on a 20-mm-long composite YVO_4/Nd:YVO_4/YVO_4 crystal and pumped by a wavelength-locked 878.9 nm diode laser.A maximum output power of 5.3 W is achieved at a pump power of 26 W,corresponding to an optical conversion efficiency of 20%and a slope efficiency of 21%.The Raman threshold for the diode pump power was only 0.92 W.The results reveal that in-band pumping by a wavelength-locked diode laser significantly enhances output power and efficiency of self-Raman lasers by virtue of improved pump absorption and relieved thermal loading.     

26W near diffraction limited Q-switched green laser based on a diode-end-pumped master oscillator power amplifier

An efficient acousto-optically Q-switched extracavity frequency-doubled 532nm laser based on a diode-end-pumped master oscillator power amplifier (MOPA) is demonstrated. With a type I non-critically phase-matched LBO, 26W of average power at 532nm in a near diffraction limited mode at a repetition rate of 30kHz was generated under 43W pump power of 1064nm Nd:YVO_{4} laser, which correspond to a frequency-doubling conversion efficiency of 60%.     

Laser diode and pumped Cr:Yag passively Q-switched yellow-green laser at 543 nm

Efficient and compact yellow green pulsed laser output at 543 nm is generated by frequency doubling of a passively Q-switched end diode-pumped Nd:YVO₄ laser at 1086 nm under the condition of sup-pressing the higher gain transition near 1064 nm. With 15 W of diode pump power and the frequency doubling crystal LBO, as high as 1.58 W output power at 543 nm is achieved. The optical to optical conversion efficiency from the corresponding Q-switched fundamental output to the yellow green output is 49%. The peak power of the Q-switched yellow green pulse laser is up to 30 kW with 5 ns pulse duration. The output power stability over 8 hours is better than 2.56% at the maximum output power. To the best of our knowledge, this is the highest watt-level laser at 543 nm generated by frequency doubling of a passively Q-switched end diode pumped Nd:YVO₄ laser at 1086 nm.     

Diode-pumped Nd:LuVO<Subscript>4</Subscript>-LBO green laser at 533 nm

We report a continuous-wave (CW) coherent green radiation at 533 nm by intracavity frequency doubling generation of 1066 nm Nd:LuVO₄ laser. With incident pump power of 18.2 W, output power of 4.3 W at 533 nm has been obtained using a 5 mm-long LBO crystal. The optical conversion efficiency was up to 23.6%. At the output power level of 4.3 W, the output stability is better than 3%. The beam quality M² values were equal to 1.13 and 1.21 in X and Y directions, respectively.     

半导体激光端泵腔内倍频Nd∶YVO4/LBO连续波8 W绿光激光器

利用两个半导体激光二极管,双端泵浦Nd∶YVO4晶体,LBO采用I类非临界相位匹配、腔内倍频.在28.9 W的泵浦功率下,获得了8 W连续波0.532 μm绿光输出,其光—光转换效率为27.7%.     

All-solid-state CW intracavity frequency-doubling Nd:Lu<Subscript>2</Subscript>O<Subscript>3</Subscript>/LBO red laser at 679.5 nm

We report an efficient intracavity second-harmonic generation (SHG) at 1359 nm in a non-linear optical crystal, LiB₃O₅ (LBO), performed with a diode end pumped continuous-wave (cw) Nd:Lu₂O₃ laser. In the case of a laser with a Nd:Lu₂O₃ crystal frequency-doubled with a LBO crystal cut for type I frequency doubling. A cw SHG output power of 462 mW has been obtained using a 10 mm long LBO crystal. The red power stability was 3.4% in 4 h.     

Diode-pumped Nd:YVO<Subscript>4</Subscript> intracavity-doubled red laser at 693 nm

It is reported that efficient continuous-wave (CW) red laser generation at 693 nm in a LBO crystal at type-I phase matching direction performed with a diode-pumped Nd:YVO₄ laser. With incident pump power of 18.2 W, output power of 278 mW at 693 nm has been obtained using a 10 mm-long LBO crystal. At the output power level of 278 mW, the output stability is better than 2.9%.