@article{oai:nifs-repository.repo.nii.ac.jp:00010890,
 author = {Kawase, Hiroki and UEHARA, Hiyori and YAO, Weichao and CHEN, Hengiun and YASUHARA,  Ryo},
 issue = {1},
 journal = {Japanese Journal of Applied Physics},
 month = {Dec},
 note = {We developed a compact and low-cost diode-pumped ∼3 μm mechanically Q-switched Er:YAP laser with high-power using an optical chopper. At 2.4 W pumping and 7 kHz modulation frequency, a stable single-pulse repetitively Q-switched laser with a wavelength of 2.796 μm has been observed. We recorded the pulse duration, the peak power, and the pulse energy of 264 ns, 22 W, and 5.9 μJ, respectively. As increasing pumping power to 7.4 W at a frequency of 10 kHz, the lasing wavelength shifted to 2.921 μm and a stable multiple-pulse laser was observed. The pulse with 75 ns duration and 34 μJ energy has been observed, corresponding to a peak power of 456 W. The peak power and the pulse energy are the highest value ever reported for an actively Q-switched mid-infrared (IR) Er:YAP laser. Thus, this laser has the potential to be utilized for industrial and science fields as high-power mid-IR light source.},
 title = {Optical chopper based mechanically Q-switched ∼3 μm Er:YAP single-crystal laser},
 volume = {60},
 year = {2020}
}