Research and control of thermal effect in a helium gas-cooled multislab Nd:glass laser amplifier

2015 ◽  
Author(s):  
Yuqi Zhang ◽  
Jiangfeng Wang ◽  
Xinghua Lu ◽  
Wenfa Huang ◽  
Xuechun Li
Keyword(s):  
Thermal Effect ◽  
Laser Amplifier ◽  
Helium Gas ◽  
And Control ◽  
Nd:Glass Laser

scholarly journals LD-pumped gas-cooled multislab Nd:glass laser amplification to joule level

2018 ◽  
Vol 6 ◽  
Author(s):  
Wenfa Huang ◽  
Jiangfeng Wang ◽  
Xinghua Lu ◽  
Tingrui Huang ◽  
Jiangtao Guo ◽  
...  
Keyword(s):  
Pump Energy ◽  
High Energy ◽  
Wavefront Aberration ◽  
Laser Amplifier ◽  
Thermally Induced ◽  
Laser Amplification ◽  
Helium Gas ◽  
Gas Cooling ◽  
Diode Pumped ◽  
Nd:Glass Laser

We demonstrate a laser diode end-pumped helium gas-cooled multislab Nd:glass laser amplifier. The design and thermal management of the proposed laser amplifier are discussed. The thermally induced wavefront aberration of the slabs was also measured and compared with simulation results. A small-signal single-pass longitudinal gain of 1.8 was measured with a pump energy of 7.3 J. With an injected seed energy of 0.6 mJ, the output energy from the amplifier reached 0.5 J at 0.2 Hz and 0.43 J at 0.5 Hz in a multipass extraction geometry, thus demonstrating the feasibility of diode-pumped, high-energy lasers with direct gas cooling.

Dynamics analysis and control of a spacecraft mechanism with joint clearance and thermal effect

2019 ◽  
pp. 163-215
Author(s):  
Bindi You ◽  
Dong Liang ◽  
Yang Zhao ◽  
Hao Tian ◽  
Huibo Zhang ◽  
...  
Keyword(s):  
Thermal Effect ◽  
Joint Clearance ◽  
Dynamics Analysis ◽  
And Control

Modeling and Analysis of Leaf Spring Based Double Parallel-Guiding Mechanism Considering Thermal Effect

2019 ◽  
Author(s):  
Shuaishuai Lu ◽  
Peng Yan
Keyword(s):  
Thermal Effect ◽  
Temperature Variation ◽  
Compliant Mechanisms ◽  
Parametric Method ◽  
Leaf Spring ◽  
Element Analysis ◽  
Modeling And Analysis ◽  
Proposed Model ◽  
Constraint Model ◽  
And Control

Abstract In the present paper, we take the leaf spring based double parallel-guiding mechanism (DPGM) as a particular case study to investigate a parametric model by considering the stress stiffening effect of the temperature variation based on the beam constraint model (BCM). In particular, a model with the temperature variation term of the DPGM is derived by incorporating the elastic stretch induced by the thermal effect of the leaf spring flexure into the BCM. Different from the traditional BCM, the compliance calculated by the established model is no longer only affected by the external loads, but the thermal deformation generated by the temperature variation. Therefore the derived model can describe both the load-nonlinearity and the thermal-nonlinearity. Based on the analysis results of a basic parallelogram module (BPM), we obtain a model of the DPGM, and the finite element analysis (FEA) method is adopted to verify the proposed model. The proposed model is a general parametric method to characterize the mechanical property of the DPGM, which can be further explored to support the optimization and control of motion systems composed of leaf spring based compliant mechanisms.

Satellite antenna dynamics and control with thermal effect

2015 ◽  
Vol 87 (3) ◽  
pp. 274-283 ◽  
Author(s):  
Bindi You ◽  
Huibo Zhang ◽  
Peixiang Wang ◽  
Jiang Zhang
Keyword(s):  
Thermal Effect ◽  
Satellite Antenna ◽  
Dynamics And Control ◽  
And Control

LD end-pumped joule-level square-rod Nd:glass laser amplifier with high efficiency

2021 ◽  
Vol 135 ◽  
pp. 106634
Author(s):  
Shengzhe Ji ◽  
Wenfa Huang ◽  
Jiangfeng Wang ◽  
Xinghua Lu ◽  
Wei Fan ◽  
...  
Keyword(s):  
High Efficiency ◽  
Laser Amplifier ◽  
Nd:Glass Laser
Sign in / Sign up

Export Citation Format

Share Document