Zhiping He

Jan 11, 2025 | onlinelibrary.wiley.com | Huang Zhang |Zhiping He |Guofeng Wang |Yunsheng Fan

Conflicts of Interest The authors declare no conflicts of interest. References 1, , , , and , “Disturbance-Observer-Based Sliding Mode Control Design for Nonlinear Unmanned Surface Vessel With Uncertainties,” IEEE Access 7 (2019): 148522–148530. 2, , , and , “Swarm Velocity Guidance Based Distributed Finite-Time Coordinated Path-Following for Uncertain Under-Actuated Autonomous Surface Vehicles,” ISA Transactions 112 (2020): 271–280.

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.

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.