期刊
APPLIED OPTICS
卷 53, 期 10, 页码 2229-2235出版社
OPTICAL SOC AMER
DOI: 10.1364/AO.53.002229
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资金
- EPSRC [EP/G068453/1, EP/H00601X/1]
- EPSRC [EP/G068453/1, EP/G001324/1] Funding Source: UKRI
- STFC [ST/J002062/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1228252, EP/G001324/1, EP/G068453/1] Funding Source: researchfish
- Science and Technology Facilities Council [ST/J002062/1, ST/J002062/1 John Adams Inst] Funding Source: researchfish
In this paper we present an optically synchronized Nd:YLF regenerative amplifier optimized for use as a preamplifier in a few-cycle optical parametric chirped pulse amplification pump laser. In the pump amplification process we employ a combination of spectral modulation and chirping in order to control and optimize the temporal shape of the pulses. We report on a comparative study of two methods for generating near-flat-top or custom real-time variable-shaped pump pulses using either controlled chirp and shaping of the spectrum of the pulses seeding a regenerative amplifier or intracavity spectral filtering to broaden the gain bandwidth of the system. We show that in addition to minimizing gain narrowing and B-integral, the efficiency of the cascaded nonlinear processes of the parametric amplifiers can be increased. (C) 2014 Optical Society of America
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