Rong Shu

Oct 18, 2024 | opg.optica.org | Rong Shu |Tao Chen |Wei Kong |Zhiping He

We have proposed a method to predict the beam quality of a quasi-continuous-wave(QCW)-pumped, passively Q-switched (PQS) monolithic ${\rm YAG}/{\rm Nd}\!:\!{\rm YAG}/{{\rm Cr}^{4 +}}\!:\!{\rm YAG}$ microchip. The boundary conditionsfor the pulse width and optical intensity of the PQS microchip wereobtained by solving the rate equations with different initialtransmittances of the saturable absorber and reflectivities of theoutput coupler.

Sep 16, 2024 | frontiersin.org | Rong Shu

Yulin YangZiyao WangPeng ChenXue ShenWei KongGenghua HuangRong Shu 1,2,3,5 1,2,3,5* 1,2,3,5 1,2,4* 4 1,3 1,2,3 Key Laboratory of Space Active Opto-electronics Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, China Shanghai Branch, Hefei National Laboratory, Shanghai, China University of Chinese Academy of Sciences, Beijing, China State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic...

Nov 28, 2023 | opg.optica.org | Rong Shu |Tao Chen |Wei Kong |Zhiping He

We demonstrate a pulsed mid-infrared (MIR) optical parametric oscillator (OPO) with both inter-pulse and intra-pulse dual-wavelength operation capability. A fiber master oscillator power amplifier incorporating an acousto-optic tunable filter (AOTF) was employed as the pump for the OPO. By finely adjusting the drive wave packets for the AOTF, dual-wavelength pump can be realized within each pulse or between two adjacent pulses.