Teppitaksak Achaya, Minassian Ara, Thomas Gabrielle M, Damzen Michael J
Opt Express. 2014 Jun 30;22(13):16386-92. doi: 10.1364/OE.22.016386.
We show for the first time that multi-ten Watt operation of an Alexandrite laser can be achieved with direct red diode-pumping and with high efficiency. An investigation of diode end-pumped Alexandrite rod lasers demonstrates continuous-wave output power in excess of 26W, more than an order of magnitude higher than previous diode end-pumping systems, and slope efficiency 49%, the highest reported for a diode-pumped Alexandrite laser. Wavelength tuning from 730 to 792nm is demonstrated using self-seeding feedback from an external grating. Q-switched laser operation based on polarization-switching to a lower gain axis of Alexandrite has produced ~mJ-pulse energy at 1kHz pulse rate in fundamental TEM(00) mode.
我们首次证明，通过直接红二极管泵浦可以实现多十瓦功率运行的翠绿宝石激光器，且效率很高。对二极管端面泵浦的翠绿宝石棒激光器的研究表明，其连续波输出功率超过26瓦，比以前的二极管端面泵浦系统高出一个多数量级，斜率效率为49%，这是二极管泵浦翠绿宝石激光器所报道的最高值。利用外部光栅的自种子反馈，实现了730至792nm的波长调谐。基于向翠绿宝石较低增益轴的偏振切换的调Q激光运行，在基模TEM(00)下以1kHz的脉冲速率产生了约mJ的脉冲能量。
