Advances in growth and power scaling of the nonlinear crystal CdSiP2 (Conference Presentation)

2018 ◽  
Author(s):  
Kevin T. Zawilski ◽  
Peter G. Schunemann ◽  
John C. McCarthy ◽  
Leonard A. Pomeranz
Keyword(s):  
Nonlinear Crystal ◽  
Power Scaling

scholarly journals Design and experimental demonstration of a high conversion efficiency OPCPA pre-amplifier for petawatt laser facility

2018 ◽  
Vol 6 ◽  
Author(s):  
Xiao Liang ◽  
Xinglong Xie ◽  
Jun Kang ◽  
Qingwei Yang ◽  
Hui Wei ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Nonlinear Crystal ◽  
Beam Quality ◽  
Pump Energy ◽  
High Conversion ◽  
Signal Pulse ◽  
High Conversion Efficiency ◽  
Optical Parametric ◽  
Good Beam Quality ◽  
Laser Facility

We present the design and experiment of a broadband optical parametric chirped-pulse amplifier (OPCPA) which provides high conversion efficiency and good beam quality at 808 nm wavelength. Using a three-dimensional spatial and temporal numerical model, several design considerations necessary to achieve high conversion efficiency, good beam quality and good output stability are discussed. To improve the conversion efficiency and broaden the amplified signal bandwidth simultaneously, the nonlinear crystal length and OPCPA parameters are analyzed and optimized with the concept of dissipating amplified idler between optical parametric amplification (OPA) of two crystals configuration. In the experiment, an amplifier consisting of two OPCPA stages of ‘L’ type configuration was demonstrated by using the optimized parameters. An amplified signal energy of 160 mJ was achieved with a total pump-to-signal efficiency of 35% (43% efficiency for the OPCPA stage 2). The output bandwidth of signal pulse reached 80 nm and the signal pulse was compressed to 24 fs. The energy stability reached 1.67% RMS at 3% pump energy variation. The optimized OPCPA amplifier operates at a repetition rate of 1 Hz and is used as a front-end injection for the main amplifier of SG-II 5PW laser facility.

scholarly journals Cooperative Double-IRS Aided Communication: Beamforming Design and Power Scaling

2020 ◽  
Vol 9 (8) ◽  
pp. 1206-1210 ◽  
Author(s):  
Yitao Han ◽  
Shuowen Zhang ◽  
Lingjie Duan ◽  
Rui Zhang
Keyword(s):  
Power Scaling ◽  
Aided Communication

scholarly journals Biological scaling in green algae: the role of cell size and geometry

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Helena Bestová ◽  
Jules Segrestin ◽  
Klaus von Schwartzenberg ◽  
Pavel Škaloud ◽  
Thomas Lenormand ◽  
...  
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Population Growth Rate ◽  
Internal Diffusion ◽  
Scaling Exponent ◽  
Power Scaling ◽  
Nutrient Distribution ◽  
Metabolic Scaling ◽  
Key Factor ◽  
Size And Morphology

AbstractThe Metabolic Scaling Theory (MST), hypothesizes limitations of resource-transport networks in organisms and predicts their optimization into fractal-like structures. As a result, the relationship between population growth rate and body size should follow a cross-species universal quarter-power scaling. However, the universality of metabolic scaling has been challenged, particularly across transitions from bacteria to protists to multicellulars. The population growth rate of unicellulars should be constrained by external diffusion, ruling nutrient uptake, and internal diffusion, operating nutrient distribution. Both constraints intensify with increasing size possibly leading to shifting in the scaling exponent. We focused on unicellular algae Micrasterias. Large size and fractal-like morphology make this species a transitional group between unicellular and multicellular organisms in the evolution of allometry. We tested MST predictions using measurements of growth rate, size, and morphology-related traits. We showed that growth scaling of Micrasterias follows MST predictions, reflecting constraints by internal diffusion transport. Cell fractality and density decrease led to a proportional increase in surface area with body mass relaxing external constraints. Complex allometric optimization enables to maintain quarter-power scaling of population growth rate even with a large unicellular plan. Overall, our findings support fractality as a key factor in the evolution of biological scaling.

Power scaling of femtosecond enhancement cavities and high-power applications

2011 ◽  
Author(s):  
Ioachim Pupeza ◽  
Tino Eidam ◽  
Jan Kaster ◽  
Birgitta Bernhardt ◽  
Jens Rauschenberger ◽  
...  
Keyword(s):  
High Power ◽  
Power Scaling

Securing Massive MIMO Via Power Scaling

2016 ◽  
Vol 20 (5) ◽  
pp. 1014-1017 ◽  
Author(s):  
Jun Zhu ◽  
Wei Xu
Keyword(s):  
Massive Mimo ◽  
Power Scaling

Blue 473-nm solid state diode pumped Nd:YAG/BiBO microchip laser

2010 ◽  
Vol 18 (1) ◽  
Author(s):  
A. Antończak ◽  
J. Sotor ◽  
M. Matysiak ◽  
K. Abramski
Keyword(s):  
Blue Light ◽  
Second Harmonic ◽  
Nonlinear Crystal ◽  
Phase Matching ◽  
Type I ◽  
Pumping Power ◽  
Diode Pumped ◽  
Light Generation ◽  
Power Diode ◽  
Matching Type

AbstractIn this paper we present a design of a compact, low power diode-pumped CW Nd:YAG laser operating at 946 nm with intracavity blue light generation at 473 nm for battery operated applications. The nonlinear crystal used in the experiment is a BiBO crystal cut for phase-matching type I. Using 0.8 W of pumping power, 20-mW stabile output power of blue light was achieved. The second harmonic generation conversion efficiency was 2.5%.

Multichip vertical-external-cavity surface-emitting lasers: a coherent power scaling scheme

2006 ◽  
Vol 31 (24) ◽  
pp. 3612 ◽  
Author(s):  
Li Fan ◽  
Mahmoud Fallahi ◽  
Jörg Hader ◽  
Aramais R. Zakharian ◽  
Jerome V. Moloney ◽  
...  
Keyword(s):  
External Cavity ◽  
Cavity Surface ◽  
Power Scaling ◽  
Surface Emitting Lasers ◽  
Emitting Lasers

Power scaling and optimum crystal orientation in continuous-wave diode-pumped Yb:KLu(WO 4 ) 2 lasers

2008 ◽  
Author(s):  
Junhai Liu ◽  
Valentin Petrov ◽  
Xavier Mateos ◽  
Huaijin Zhang ◽  
Jiyang Wang
Keyword(s):  
Crystal Orientation ◽  
Continuous Wave ◽  
Power Scaling ◽  
Diode Pumped
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