| 樊莉,陈海涛,朱骏.LD端面抽运1.1x μm全固态连续拉曼激光器[J].光电子激光,2014,(3):419~424 |
| LD端面抽运1.1x μm全固态连续拉曼激光器 |
| LD end-pumped all-solid-state continuous-wave Raman lasers at 1.1x μm |
| 投稿时间：2013-08-02 |
| DOI： |
| 中文关键词: 全固态拉曼激光器 受激拉曼散射(SRS) BaWO4晶体 复合YVO4晶体 |
| 英文关键词:all-solid-state Raman lasers stimulated Raman scattering (SRS) BaWO4cr ystal composite YVO4crystal |
| 基金项目:国家自然科学基金(11004170)、江苏省高校自然科学基金(10KJB140013)和江苏省自然 科学基金(BK20130453)资助项目 (扬州大学 物理科学与技术学院,江苏 扬州 225002) |
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| 中文摘要: |
| 报道了采用LD端面抽运的BaWO4晶体内 腔式连续拉曼激光器和复合YVO4晶体连续自拉 曼激光器的实验研究。考虑了激光晶体的热效应,采用等效G参 数法计算了谐振腔内的腔模参数,从谐振 腔结构、泵浦光斑大小以及晶体的选择方面对激光器系统进行了优化设计,对不同腔结构的 全固态连续拉 曼激光器的性能进行了研究。选用拉曼增益高、热性能较好的BaWO4晶体作为拉曼介质, 实现了LD端面 泵浦Nd:YVO4/BaWO4内腔式、低阈值、高效率和高功率的拉曼激光在1180nm的连续运转。在25.5W的 泵浦功率下,获得了3.36W的1180nm连续拉曼光输出,光光转换效率 为13.2％,斜效率为15.3％,拉 曼阈值为3.6W。通过选用复合晶体作为自拉曼介质使连续拉曼激光 器的热效应显著改善,实现了LD端面 泵浦连续自拉曼激光器在1175nm的高效运转。 在25.5W的泵浦功率下 ,获得了最高3.4W的1175nm连续拉曼光输出,光-光转换效率为13.3%,拉曼阈值降低至 2.21W,斜效率为14.6%。 |
| 英文摘要: |
| Laser diode end-pumped continuous-wave BaWO4intracavity Raman laser and c omposite YVO4self-Raman laser are reported.By using equivalent G parameter metho d,the cavity mode parameters are calculated with the consideration of the thermal lens in the laser crystal.The laser system is opti mized by designing the cavity construction,pump beam size and choosing the crystal.A high-efficiency continu ous-wave Raman conversion with a BaWO4Raman crystal in a diode-end-pumped Nd:YVO4laser has been demonst rated.Since BaWO4has high Raman gain and good thermal properties,the continuous-wave Raman laser with lo w threshold,high efficiency, good stability and high output power can be realized.The highest output power ob tained at the 1180nm is 3.36W under the diode power of 25.5W,corresponding to a slope efficiency of 15.3% an d a diode-to-Stokes optical conversion efficiency of 13.2%.The Raman threshold is 3.6W of diode power at 808nm.By using composite YVO4crystal as the laser and Raman medium simultaneously,the diode-end-pump ed continuous-wave self-Raman laser at 1175nm has been demonstrated.The therma l effects can be efficiently improved by using the composite crystal as gain medium.The highest output power obtained at the 1175nm is 3.4W under the diode power of 25.5W,corresponding to a slope efficiency of 14.6% and a diode-to-S tokes optical conversion efficiency of 13.3%.The Raman threshold is as low as 2.21W of diode power at 808nm. |
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