对四种掺杂浓度的Nd：YVO4晶体进行了激光性质的研究和对比.从LD端面泵浦固体激光器的理论出发，结合实验数据计算了相应晶体的有效受激发射截面σe.结果表明，随Nd3+浓度的提高，Nd：YVO4晶体的有效受激发射截面σe逐渐增大，上能级寿命re不断减小，两者的乘积在2at.％附近达到最大值.
The theory of LD end-pumped solid-state lasers is analyzed, and a method that measures the effective stimulated emission cross-section σe of laser crystal is ascertained. We compare the threshold and slope efficiency of four Nd:YVO4 crystals which have different doping levels, and calculate the σe of these crystals with upper-level life-times that have measured by us. Our results show that the 1.9at% Nd:YVO4 crystal has a σeTe of 18.3 μscm2 which is largest in all the four samples.
参考文献
| [1] | Fields R A, Bimbaum M, Fincher C L. High efficiency Nd:YVO4 diode-laser end-pumped laser [J]. Appl. Phys.Lett., 1987, 51(23): 1885～1886 |
| [2] | Brown D C, Nelson R, Billings L. Efficient CW end-pumped, end-cooled Nd:YVO4 diode-pumped laser [J]. Appl. Opt., 1997, 36(33): 8611～8613 |
| [3] | Scheps R, Myers J F, Mizell G. High-efficiency 1.06μm output in a monolithic Nd:YVO4 laser [J]. Appl. Opt.,1994,33(24): 5546～5549 |
| [4] | 金天峰,袁怿谦,缪同群等.半导体激光泵浦的Nd：YVO4激光器的1.064μm高效率连续输出[J].光学学报,1996,16(5)：598～600 |
| [5] | 王长青,Chow Y T,孟宪林等.Nd:YVO4晶体的偏振激发荧光光谱及其LD泵浦激光特性[J].中国激光,1998,25(12)：1129～1132 |
| [6] | Fan T Y, Byer R L. Diode laser-pumped solid-state lasers [J]. IEEE J. Quantum Electron., 1988, 24(6): 895～912 |
| [7] | Hwang I H, Meador W E. An analytical model for longitudinally pumped continuous-wave laser [J]. J. Appl. Phys.,1992, 72(7): 2556～2561 |
| [8] | Risk W P. Modeling of longitudinally pumped solid-state lasers exhibiting reabsorption losses [J]. Opt. Soc. Am.,1988, 5(7): 1412～1423 |
| [9] | Laporta P, Brussard M. Design criteria for mode size optimization in diode-pumped solid-state lasers [J]. IEEE. J.Quant. Electron., 1991, QE-27(10): 2319～2326 |
| [10] | CASIX. Inc., Crystals & Materials (Fuzhou, China, 1995) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%