激光二极管泵浦Nd∶LMA激光器的连续波输出研究

报道用一个３Ｗ激光二极管端面泵浦Ｎｄ∶ＬＭＡ激光器。实验采用三镜折迭像散补偿腔。在１０５４ｎｍ波长，激光器连续输出功率达６２０ｍＷ，斜率效率为５０％，光－光转换效率２０％。在１０８３ｎｍ波长处，激光器连续输出功率为６４ｍＷ，斜率效率为６％，光－光转换效率２．１％。     

单频运转的Nd：YVO4激光器

报道了激光二极管纵向泵浦单频运转的Ｎｄ：ＹＶＯ４激光器，用波长为８０９ｎｍ激光二极管的连续输出功率６６０ｍＷ泵浦，获得１０６４ｎｍ，功率为１５５ｍＷ连续单频输出，泵浦阈值２２６ｍＷ，斜率效率３３．８％，线宽小于１０ＭＨｚ．     

二极管泵浦Nd：LMA激光器1054mm连续波输出

报道了用一个３Ｗ激光二极管端面泵浦Ｎｄ：ＹＭＡ激光器。实验采用三镜折叠象散补偿腔。在１０５４ｍｍ波长，激光器ＣＷ输出功率达２３０ｍＷ，斜率效率为３８％，光－光转换效率９．５％，     

半导体激光泵浦的Nd：YVO4激光器的1.064μmy高效率连续输出

报道了半导体激光端面泵浦的Ｎｄ：ＹＶＯ４激光器获得线偏振的１．０６４μｍ激光高效率连续稳定输出，在半导体激光功率为１．５Ｗ时，获得连续输出功率为８３７ｍＷ的ＴＥＭ００模，激光器泵浦阈值功率为１４０ｍＷ，斜率效率达６１．５％，光－光转换效率达５６％，电－光转换效率达１５％。     

半导体激光泵浦的Nd∶YVO_4激光器的1．064μm高效率连续输出

报道了半导体激光端面泵浦的Ｎｄ∶ＹＶＯ４激光器获得线偏振的１．０６４μｍ激光高效率连续稳定输出。在半导体激光功率为１．５Ｗ时，获得连续输出功率为８３７ｍＷ的ＴＥＭ００模，激光器泵浦阈值功率为１４０ｍＷ，斜率效率达６１．５％，光－光转换效率达５６％，电－光转换效率达１５％。     

高掺杂Yb3+:磷酸盐玻璃实现高效率、可调谐连续激光运转

采用９４０ｎｍ掺杂蓝宝石激光器作抽运光源,对掺杂的质量分数为１９％高掺杂浓度的Ｙｂ＾３＋磷酸盐玻璃激光器进行了实验研究,获得了１６５ｍＷ的连续激光输出,其中心波长位于１．０５３ｕｍ。实现了同类激光器中５７．８％的高斜率效率,光－光转换效率为３４．２％。激光输出在１．０３８～１．０６４ｕｍ范围内实现了可调谐。     

激光二极管泵浦单频连续工作的Nd：YAG激光器

在国内首次报道了激光二极管泵浦单频连续工作的Ｎｄ：ＹＡＧ激光器，采用扭摆模腔技术方法，在８０８ｎｍ激光二极管连续泵浦下，取得１０６４ｎｍ连续单频工作，输出功率５５ｍＷ的结果，泵浦阈值２７６ｍＷ，斜率效率２３％，线宽小于２５ＭＨｚ（受仪器测量精度限制）。     

激光二极管泵浦的准连续运转飞秒Cr:LiSAF激光器

报道国内第一台用６７０ｎｍ激光二极管泵浦的准连续锁模运转的Ｃｒ：ＬｉＳＡＦ激光器。对于连续运转,泵浦阈值功率２４０ｍＷ,当吸收功率为３６８ｍＷ的输出,输出波长８５０ｎｍ,斜效率为３．５％。在准连续运转（１００ＨＺ,占空比１／５时）,泵清阈值功率４５ｍＷ,斜效率为９．８％,用染料作为锁模妄动介质,实现了准连续锁模运转,光脉冲输出的中心波长为８５０ｎｍ。     

半导体激光泵浦的Nd:YVO4激光器的1.064 μm高效率连续输出

报道了半导体激光端面泵浦的Nd:YVO4激光器获得线偏振的1.064 μｍ激光高效率连续稳定输出。在半导体激光功率为1.5 W时，获得连续输出功率为837 kW的TEM00模，激光器泵浦阈值功率为140 kW，斜率效率达61.5％，光-光转换效率达56％，电-光转换效率达15％。     

激光二极管抽运Nd∶YVO_4晶体1342nm和671nm激光器研究

报道了激光二极管抽运的Ｎｄ∶ＹＶＯ４晶体１３４２和６７１ｎｍ激光特性．１３４２ｎｍ激光最大输出功率为１７５Ｗ，光光转换效率为３２１％，斜效率为４３％．利用Ⅰ类非临界相位匹配ＬＢＯ晶体腔内倍频，当输入抽运功率为６Ｗ时，获得功率为５０２ｍＷ的６７１ｎｍ激光输出，光光转换效率超过８３％；当６７１ｎｍ激光输出功率为４００ｍＷ时，短期的不稳定度小于２％．     

980 nm Yb-doped single-mode fiber laser and its frequency-doubling with BIBO

A quasi-three-level Yb-doped single-mode fiber laser at 980 nm by adopting two 0° fiber ends as cavity mirrors generated a total output power of 1.32 W with the slope efficiency of 75.3%. The fiber length was 36.5 cm close to the optimal theoretical fiber length. The corresponding optical conversion efficiency was 66% from the incident pump power at 946 nm to the laser power at 980 nm. Through frequency-doubling with BIBO crystal, a total output power of 15 mW at 490.8 nm was obtained.     

二极管泵浦Nd:LMA激光器的1054nm连续波输出

报道用一个3W激光二级管端面泵浦Nd:LMA激光器.实验采用三镜折叠象散补偿腔.在1054nm波长,激光器CW输出功率达230mW,斜率效率为38%,光-光转换效率9.5%.     

Diode-pumped high-power cw blue laser at 473 nm with a compact three-element cavity

We report on a diode-pumped cw Nd:YAG laser operating at 946 nm with a maximum output power of 3.3 W and a slope efficiency of 22% with respect to the incident pump power of 17.5 W. Intracavity frequency doubling with nonlinear crystal LBO yielded a single-ended blue output power of 590 mW with optical conversion efficiency of 3.4%. A very simple, compact three-element cavity of 35 mm long was used. The power fluctuation of the blue laser was 4.3% (rms) at output power level of 400 mW. Transverse mode hopping was observed at higher output power.     

(Tm,Ho):YLF微片激光器的实验研究

报道了一台连续792 nm Ti:Al2O3激光器纵向抽运的(Tm,Ho):YLF微片激光器.在室温条件下,当抽运功率为680 mW时,激光器在2.06 μm波长的输出功率达到90 mW.激光器阈值为380 mW,光光转换效率为13%,斜率效率为26%.     

紧凑型窄线宽分布反馈光纤激光器

 在铒/镱共掺杂有源光纤上直接刻蚀光栅,制成一台紧凑型非对称π相移分布反馈光纤激光器。光栅总长度约50 mm,最佳相移位置在29 mm处,最佳耦合系数为150 m^-1。采用980 nm激光二极管同向泵浦,当最大泵浦功率为200 mW时,在1 550.94 nm处实现约10 mW激光输出,线宽小于0.05 nm,阈值约35 mW,斜率效率为6.06%,总光 光转换效率为5%,基本满足长距离光通信系统光源功率实用化的要求。     

Efficient Tm：YAG Ceramic Laser at 2 μm

We demonstrate a high-efficiency continuous-wave Tm： YAG ceramic laser pumped with a Ti：sapphire laser. An output power up to 860mW is obtained under an absorbed pump power of 2.21 W at 785nm, corresponding to a slope efficiency of 42.1% and optical to optical efficiency of 22%. The measured central wavelength is 2012nm.     

Resonantly pumped multiwavelength operation in Er:YAP

A multiwavelength Er:YAP laser pumped by MgO:PPLN locked at 1535 nm with etalon was reported. 170 mW of 1609 nm, 120 mW of 1623 nm output were achieved under total incident pump power of 7 W at 77 K. The slope efficiency were 5.5, 7.2% of the two wavelength.     

Frequency doubling of a fibre-amplified 1083 nm DBR laser

A good frequency standard is required at 1083 nm for measurements on the fine structure of helium and of the fine structure constant. Several milliwatts of CW frequency-doubled light offers the prospect of stabilisation to a Doppler-free hyperfine transition in molecular iodine. The 1083 nm emission of an extended-cavity DBR diode laser has been amplified using an ytterbium-doped fibre amplifier, and applied to a type-I phase matched Mg:LiNbO₃ crystal in a high-Q fundamental-resonant cavity for frequency doubling. The amplifier gain at 1083 nm under typical operating conditions was 13.8 dB, with a coherent output power up to 63 mW, limited by the maximum signal input power. The doubling cavity Q was , and about 70% of the incident power was coupled in. The maximum 2nd-harmonic conversion efficiency exceeded 20% and provided an output power of 3.7 mW for making continuous frequency scans of up to 600 MHz in the green. An optical spectrum analyser at 541.5 nm showed fringes of 4.6 MHz full width half maximum, close to the instrumental width. Received: 25 February 1998 / Revised and Accepted: 28 May 1998     

激光二极管抽运掺钕钙铌镓石榴石激光器的研究

报道了连续激光二极管（LD）端面抽运的Nd:CNGG非均匀加宽激光器。当吸收抽运功率为675.5mW时，最大TEM00模输出功率为105.5mW、斜率效率为21.2％、光-光转换效率为15.6％。随着抽运功率的增加，三个中心波长实现振荡的次序为1061.3nm、1059.1nm和1065.6nm，实现了三波长同时输出。     

Diode-pumped Pr(3+):KY(3)F(10) red laser

We report the first observation to our knowledge of room-temperature continuous-wave laser operation of a Pr(3+):KY(3)F(10) single crystal at 644.5 nm, pumped by a blue GaN laser diode emitting at 446 nm. With a 2.5% transmission output coupler and a nonoptimized optical cavity, an output power of 39 mW was obtained at 644.5 nm with a laser threshold of 125 mW and a differential slope efficiency of 23%.