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We report the demonstration of over 30-J of uncompressed broadband energy, indicating the potential peak power in excess of 500-TW with high temporal-contrast around 1011 and a flat-toped spatial-profile with an ∼80 % filling factor.
We have demonstrated over 30 J broadband output energy based on optical parametric chirped-pulse amplification (OPCPA) and Ti:sapphire chirped-pulse amplification (CPA), indicating potential for peak power of 500 TW with extremely high temporal contrast.
In this paper, the first Yb femtosecond oscillator based OPCPA demonstrated at 1030 nm and with spectral bandwidth adequate for amplifying femtosecond pulses. Direct laser diode (LD) amplification of 1030 nm light makes this OPCPA a feasible preamplifier for a compact, high contrast, energetic, short pulse laser systems that can be considered for development of laser-driven proton accelerators.
Stable excitation discharge in a TEA gas laser is obtained with an equivalent repetition rate of 17 kHz in a double pulse mode employing a supersonic flow. Based on the experimental results, a formula for estimating the maximum repetition rate in a supersonic flow is proposed.
THz emissions from semiconductor surfaces excited by laser pulses at 780, 1050 and 1560 nm wavelengths have been investigated. InSb is the most efficient emitter for 1560 nm excitation in the other emitters.
The high-pressure, pulsed glow discharge has been studied for further understanding of the excitation discharge on excimer lasers. The influences of shock waves on the discharge have been investigated eliminating the other factors, which may affect the discharge instabilities, such as gas density depletion, discharge products, residual ions and electrode heating. A shock wave of 1.2 in Mach number...
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