Pulse compression and beam quality improvement of a single-frequency Nd:YAG MOPA system

2013 ◽  
Author(s):  
Oliver Lux ◽  
Hristomir Stankov ◽  
Haro Fritsche ◽  
Hans J. Eichler
Keyword(s):  
Quality Improvement ◽  
Pulse Compression ◽  
Beam Quality ◽  
Single Frequency

550-W Single-Frequency All-Fiber Amplifier with Near-Diffraction-Limited Beam Quality

2020 ◽  
Vol 47 (4) ◽  
pp. 0415001
Author(s):  
来文昌 Lai Wenchang ◽  
马鹏飞 Ma Pengfei ◽  
刘伟 Liu Wei ◽  
黄龙 Huang Long ◽  
李灿 Li Can ◽  
...  
Keyword(s):  
Beam Quality ◽  
Fiber Amplifier ◽  
Single Frequency

Beam quality improvement of ionization injected electrons by using chirped pulse in wakefield acceleration

2019 ◽  
Vol 61 (8) ◽  
pp. 085023
Author(s):  
Ye Cui ◽  
Guo-Bo Zhang ◽  
Yan-Yun Ma ◽  
De-Bin Zou ◽  
Xiao-Hu Yang ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Beam Quality ◽  
Chirped Pulse ◽  
Wakefield Acceleration

scholarly journals Measurements of acoustic scattering from zooplankton and oceanic microstructure using a broadband echosounder

2009 ◽  
Vol 67 (2) ◽  
pp. 379-394 ◽  
Author(s):  
Andone C. Lavery ◽  
Dezhang Chu ◽  
James N. Moum
Keyword(s):  
High Frequency ◽  
System Performance ◽  
Pulse Compression ◽  
Acoustic Scattering ◽  
Single Frequency ◽  
Frequency Range ◽  
Range Resolution ◽  
Continuous Frequency ◽  
Processing Techniques ◽  
Signal Processing Techniques

Abstract Lavery, A. C., Chu, D., and Moum, J. N. 2010. Measurements of acoustic scattering from zooplankton and oceanic microstructure using a broadband echosounder. – ICES Journal of Marine Science, 67: 379–394. In principle, measurements of high-frequency acoustic scattering from oceanic microstructure and zooplankton across a broad range of frequencies can reduce the ambiguities typically associated with the interpretation of acoustic scattering at a single frequency or a limited number of discrete narrowband frequencies. With this motivation, a high-frequency broadband scattering system has been developed for investigating zooplankton and microstructure, involving custom modifications of a commercially available system, with almost complete acoustic coverage spanning the frequency range 150–600 kHz. This frequency range spans the Rayleigh-to-geometric scattering transition for some zooplankton, as well as the diffusive roll-off in the spectrum for scattering from turbulent temperature microstructure. The system has been used to measure scattering from zooplankton and microstructure in regions of non-linear internal waves. The broadband capabilities of the system provide a continuous frequency response of the scattering over a wide frequency band, and improved range resolution and signal-to-noise ratios through pulse-compression signal-processing techniques. System specifications and calibration procedures are outlined and the system performance is assessed. The results point to the utility of high-frequency broadband scattering techniques in the detection, classification, and under certain circumstances, quantification of zooplankton and microstructure.

Beam quality improvement of 1.95-μm GaSb-based broad-area self-pulsed laser by off-axis feedback

2020 ◽  
Vol 59 (07) ◽  
pp. 1
Author(s):  
Xin Zhang ◽  
Cunzhu Tong ◽  
Shili Shu ◽  
Yanjing Wang ◽  
Lijie Wang
Keyword(s):  
Quality Improvement ◽  
Beam Quality ◽  
Pulsed Laser ◽  
Broad Area

Laser beam quality improvement of REPUSIL-based rod amplifier with local short adiabatic taper (Conference Presentation)

2018 ◽  
Author(s):  
Yuan Zhu ◽  
Martin Lorenz ◽  
Tina Eschrich ◽  
Martin Leich ◽  
Claudia Aichele ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Laser Beam ◽  
Beam Quality ◽  
Laser Beam Quality

scholarly journals Beam quality improvement of high-power semiconductor lasers using laterally inhomogeneous waveguides

2018 ◽  
Vol 113 (22) ◽  
pp. 221107 ◽  
Author(s):  
M. J. Miah ◽  
S. Strohmaier ◽  
G. Urban ◽  
D. Bimberg
Keyword(s):  
Quality Improvement ◽  
Semiconductor Lasers ◽  
High Power ◽  
Beam Quality ◽  
Power Semiconductor
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