Frolov M P, Korostelin Yu V, Kozlovsky V I, Leonov S O, Fjodorow P, Skasyrsky Ya K
Opt Lett. 2020 Dec 15;45(24):6647-6650. doi: 10.1364/OL.411559.
High-energy laser operation of a -doped single-crystal CdTe is demonstrated at the temperature of 77 K. Pumped with 250 µs pulses of a 4.08 µm Fe:ZnSe laser, the Fe:CdTe laser produced a record output of 0.35 J, with a slope efficiency of 44%. A further up-scaling by employing high-energy pump sources is feasible, thus facilitating material-processing applications. The laser was tunable from 4.86 to 5.37 µm. In a nonselective cavity, the laser's central wavelength was 5.03 µm at 77 K, and shifted to 5.23 µm at 215 K. At the later operation point, reachable using a Peltier element, the laser still produced 0.15 J of output energy with an efficiency of 22%.
在77 K温度下演示了掺铁单晶碲化镉（Fe:CdTe）的高能激光运行。用4.08 µm的铁掺杂硒化锌（Fe:ZnSe）激光的250 µs脉冲泵浦时，Fe:CdTe激光器产生了创纪录的0.35 J输出，斜率效率为44%。采用高能泵浦源进一步扩大规模是可行的，从而有利于材料加工应用。该激光器的调谐范围为4.86至5.37 µm。在非选择性腔中，该激光器在77 K时的中心波长为5.03 µm，在215 K时移至5.23 µm。在使用珀耳帖元件可达到的后一运行点，该激光器仍产生0.15 J的输出能量，效率为22%。
