Shanghua Li, Qing Wang, Rui Song, Fangfang Hou, Mingwei Gao, Chunqing Gao. Laser diode pumped high-energy single-frequency Er:YAG laser with hundreds of nanoseconds pulse duration[J]. Chinese Optics Letters, 2020, 18(3): 031401
- Chinese Optics Letters
- Vol. 18, Issue 3, 031401 (2020)
Fig. 1. Maximum upper-state density versus different pump wavelengths.
Fig. 2. Schematic diagram of laser setup. PD, photo detector; PBS, polarization beam splitter; HWP, half-wave plate; ISO, isolator; LD, laser diode; AOM, acousto-optic modulator; PZT, piezoelectric ceramic transducer.
Fig. 3.
Fig. 4. Characteristics of single-frequency pulse energy and width versus pump power.
Fig. 5. Build-up time with and without seed injection at a PRF of 200 Hz.
Fig. 6. Heterodyne detection result and FFT result at the highest output energy.
Fig. 7. Central frequency stability of the beating signal.
Fig. 8. Beam characterization at highest output energy.
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Table 1. Definition of the Parameters
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