【摘要】：2μm激光器作為中波紅外固體激光器的泵浦源方案之一,由于可以獲得較高的中波紅外激光輸出,因此逐漸得到重視。設(shè)計(jì)了一種基于1 940nm光纖激光器泵浦的高平均功率準(zhǔn)連續(xù)Ho∶YLF激光器,并對(duì)其進(jìn)行了實(shí)驗(yàn)研究,表明在Ho離子摻雜濃度0.5%、晶體長(zhǎng)度35mm、晶體控溫20℃時(shí),采用雙棒串接、平凹腔L型結(jié)構(gòu)獲得了36 W的準(zhǔn)連續(xù)2.067μm激光輸出,其最高光光轉(zhuǎn)換效率為51.4%,重復(fù)頻率20kHz,脈沖寬度121ns,譜線寬度小于3nm。實(shí)驗(yàn)結(jié)果驗(yàn)證了采用1 940nm光纖激光器泵浦作為泵浦Ho∶YLF獲得高功率準(zhǔn)連續(xù)2μm激光的可行性。
[Abstract]:As one of the pumping schemes of medium-wave infrared solid-state laser, 2 渭 m laser can obtain high output of medium-wave infrared laser, so it has been paid more and more attention. A high average power quasi-continuous Ho: YLF laser pumped by a 1 940nm fiber laser is designed and experimentally studied. It is shown that a double rod series connection is used when the Ho ion doping concentration is 0.5mm, the crystal length is 35mm, and the crystal temperature is 20 鈩，

本文編號(hào)：2136144