基于孤子自压缩的高功率少周期2μm激光产生(特邀)  

High-power, few-cycle 2μm laser pulse generation based on soliton self-compression(Invited)

作　　者：杨婷婷 陈红山 刘贺言 郝婧婕 张金伟 Yang Tingting;Chen Hongshan;Liu Heyan;Hao Jingjie;Zhang Jinwei(School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]华中科技大学光学与电子信息学院,湖北武汉430074

出　　处：《红外与激光工程》2021年第8期36-42,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金(62075068)。

摘　　要：具有少周期量级脉冲宽度的高功率2μm波段超快激光在非线性频率变换、激光光谱学以及医疗等领域有着重要且广泛的应用。利用高功率2μm超快光源驱动孤子自压缩是产生高功率少周期2μm激光的一种有效方法。文中利用自建的2μm Ho:YAG锁模碟片振荡器作为种子源,在大模场光子晶体光纤中进行光谱展宽并实现孤子自压缩,最终获得了平均功率为10.2 W、脉冲宽度为3个光学周期的2μm激光输出。实验采用FROG对输出脉冲的宽度和光谱进行测量,并与波长计测量的光谱以及理论模拟的结果进行了比较,验证了实验结果的准确性。High-power 2 μm lasers with few-cycle pulse duration have enabled diverse and important applications ranging from nonlinear frequency conversion, laser spectroscopy to medicine. Soliton selfcompression is an effective scheme to deliver such pulses, which is driven by a high-power 2 μm laser source with relatively longer pulse duration. In this work, the soliton self-compression process was realized in a large-modearea photonic crystal fiber(PCF) driven by a mode-locked Ho:YAG thin-disk oscillator, which delivered threecycle laser pulses at the center wavelength of 2 μm with an average power of 10.2 W. The pulse duration and spectrum of the pulses were measured by a frequency-resolved optical gating(FROG) apparatus, matching well with the simulation results.

关 键 词：孤子自压缩 2μm碟片激光器 中红外 FROG 

分 类 号：O437[机械工程—光学工程]