Jiajun Song, Xianghao Meng, Zhaohua Wang, Xianzhi Wang, Wenlong Tian, Jiangfeng Zhu, Shaobo Fang, Hao Teng, Zhiyi Wei. Harmonically pump a femtosecond optical parametric oscillator to 1.13 GHz by a femtosecond 515 nm laser[J]. Chinese Optics Letters, 2020, 18(3): 033201
- Chinese Optics Letters
- Vol. 18, Issue 3, 033201 (2020)
Fig. 1. Experimental setup for the 1.13 GHz ring cavity OPO. DM1,2: dichroic mirror, HWP1,2: half-wave plate, PBS: polarizing beam splitter, L1: lens of
Fig. 2. (a) Output power of the signal at 720 nm versus the pump power, and (b) the normalized signal tuning range and the corresponding average power.
Fig. 3. (a) Pulse train of the pump laser, (b) pulse train of the 1.13 GHz signal pulses, which is 15 times that of the pump laser, and (c) the RF spectrum of the 1.13 GHz signal laser at a 2.5 GHz span with a 1 MHz resolution.
Fig. 4. (a) Measured signal pulse temporal profile at 780 nm and corresponding spectrum, and (b) measured spatial profile of a 1.13 GHz signal laser.
Fig. 5. Red curve, phase noise PSD of the signal from 1 Hz to 10 MHz. Blue curve, phase noise PSD of the pump from 1 Hz to 10 MHz. Black curve, IPN of the signal from 1 Hz to 10 MHz.
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Table 1. Comparison of the deff for different nonlinear crystals (515 nm→750 nm+1643.6 nm)
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