期刊
CURRENT OPTICS AND PHOTONICS
卷 5, 期 2, 页码 180-185出版社
OPTICAL SOC KOREA
DOI: 10.3807/COPP.2021.5.2.180
关键词
Carbon nanotubes; Pulsed operation; Saturable absorbers; Waveguide lasers
类别
资金
- National Research Foundation of Korea (NRF) - Korean Government [2018H1A2A1061480, 2020R1A4A2002828]
- National Research Foundation of Korea [2018H1A2A1061480, 2020R1A4A2002828] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A femtosecond-laser inscribed Yb:YAG surface channel waveguide (WG) laser with single-walled carbon nanotubes deposited on the top surface of the WG was passively Q-switched by evanescent field interaction. Q-switched operation of the compact Yb:YAG WG laser was achieved near 1031 nm with two different pumping schemes and an output coupling transmission of 91%. The Q-switched pulse characteristics depending on the absorbed pump power were investigated for both pumping geometries and analyzed in detail based on theoretical modeling. The best performances were 204.4 nJ/75 ns at a repetition rate of 1.87 MHz, and 201.1 nJ/81 ns at 1.75 MHz for single- and double-pass pumping, respectively.
A femtosecond-laser inscribed Yb:YAG surface channel waveguide (WG) laser with single-walled carbon nanotubes deposited on the top surface of the WG was passively Q-switched by evanescent field interaction. Q-switched operation of the 14-mm-long compact Yb:YAG WG laser was achieved near 1031 nm with two different pumping schemes (single- and double-pass pumping) with an output coupling transmission of 91%. The Q-switched pulse characteristics depending on the absorbed pump power were investigated for both pumping geometries and analyzed in detail based on theoretical modeling. The best performances (energy/pulse duration) for each configuration were 204.4 nJ/75 ns at a repetition rate of 1.87 MHz, and 201.1 nJ/81 ns at 1.75 MHz for single- and double-pass pumping, respectively.
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