H. Z. Zhang

ORCID: 0009-0003-8981-5854
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About
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Research Areas
  • Photonic and Optical Devices
  • Robotic Locomotion and Control
  • Neural Networks and Reservoir Computing
  • Solid State Laser Technologies
  • Nonlinear Dynamics and Pattern Formation
  • Photorefractive and Nonlinear Optics
  • Atomic and Subatomic Physics Research
  • Semiconductor Lasers and Optical Devices
  • Spectroscopy and Quantum Chemical Studies
  • Quantum optics and atomic interactions
  • Quantum Information and Cryptography
  • Mechanical and Optical Resonators
  • Modular Robots and Swarm Intelligence
  • Prosthetics and Rehabilitation Robotics
  • Control and Dynamics of Mobile Robots
  • Robotic Path Planning Algorithms

Jilin University
1989-2023

Jilin Medical University
1992

We consider the small-signal response of a rate-equation laser to modulation cavity length. To avoid nonlinear resonances in modulators and power supplies, we demonstrate that one can hold frequency amplitude fixed while varying detuning change resonant modulation, thereby extract relaxation oscillation damping rate those oscillations. This technique permits careful study parameters govern small oscillations discrimination among several different models recently proposed describe...

10.1103/physreva.40.6339 article EN Physical review. A, General physics 1989-12-01

Employing a coated right-angled sapphire prism as the OPO cavity mirror, AgGaS2 type-I singly resonant optical parametric oscillator was demonstrated experimentally, which pumped by ns 1.064 μm Nd:YAG laser. Continuously tunable 2.35 to 5.27 radiation without changing mirrors and maximum output energy 0.58 mJ per pulse are recorded.

10.1134/s1054660x09030013 article EN cc-by-nc Laser Physics 2009-03-01

Abstract Non-Markovian effect is found to be able decrease the quantum speed limit (QSL) time, and hence enhance intrinsic of evolution. Although a reservoir with larger degree non-Markovianity may seem like it should cause smaller QSL times, this seemingly intuitive thinking not always true. We illustrate by investigating time qubit that coupled two-band photonic-band-gap (PBG) environment. show how influenced coherent property band-gap width. In particular, we find attributed increasing...

10.1038/srep39110 article EN cc-by Scientific Reports 2016-12-23

Different from the vehicles and robots that move on ground, complex nonlinear track–wall interactions bring considerable difficulties to accurate control of tracked wall-climbing due effect gravity adsorption. In this article, authors propose a trajectory-tracking system for based fuzzy logic computed-torque (FLCT) method. A key element in proposed strategy is consider adsorption force compensation dynamic model. Validated via numerical simulations experiments, results show controller can...

10.3390/s24010144 article EN cc-by Sensors 2023-12-27

We report experimental results of radiation amplification without population inversion in sodium according to a four-level model.© (1992) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading the abstract is permitted personal use only.

10.1117/12.130480 article EN Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE 1992-10-28
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