Commissioning of a frequency-resolved optical gating system at the OMEGA EP laser facility: SpecFROG.
Commissioning of a frequency-resolved optical gating system at the OMEGA EP laser facility: SpecFROG.
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在 OMEGA EP 激光设施 SpecFROG 上调试频率分辨光学选通系统。
DOI：
10.1063/1.4929868
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
P. Patel
中科院分区：
文献类型：
--
作者：
G. Kemp;A. Link;Y. Ping;S. Ayers;P. Patel
我们提出了一个新的单发，频率分辨光学选通系统的设计和调试的欧米茄EP激光设施-被称为“SpecFROG”-用于表征的瞬时强度和相位的10 ps脉冲用于研究超强激光等离子体相互作用。采用偏振选通几何结构，以确保诊断是宽带的，并具有明确的时间方向性。SpecFROG能够在载波波长λo的~ 15%的可调总谱移窗口上表征持续时间在0.5-25 ps之间的~ 10 s的mJ脉冲，具有~ 285 fs的几何时间模糊和~ 0.1%的谱移分辨率;对于EP脉冲的基波（1ω，λo = 1.054 μm）和二次谐波（2ω，λo = 0.527 μm），目前存在两种配置。初始镜面反射率测量的0.1kJ，0.10 ps的欧米茄EP激光固体密度铝目标表明，与皮秒级脉冲的强度相当的镜面脉冲特性的显着不同的缩放。
We present the design and commissioning of a new single-shot, frequency-resolved optical gating system on the OMEGA EP laser facility - dubbed "SpecFROG" - for characterizing the instantaneous intensity and phase of ∼10 ps pulses used to study ultra-intense laser-plasma interactions. A polarization-gating geometry is employed to ensure tha the diagnostic is broadband and has unambiguous time directionality. SpecFROG is capable of characterizing ∼10 s of mJ pulses with durations between 0.5-25 ps with ≲285 fs geometrical temporal blurring and ∼0.1% spectral shift resolutions over an adjustable total spectral shifting window of ∼15% of the carrier wavelength λo; configurations currently exist for both the fundamental (1ω, λo = 1.054 μm) and second harmonic (2ω, λo = 0.527 μm) of the EP pulse. Initial specular reflectivity measurements of the ∼1 kJ, ∼10 ps OMEGA EP laser off solid density aluminum targets suggest drastically different scalings for specular pulse properties compared to picosecond-scale pulses of comparable intensities.
影响因子：
2.4
作者：
Brambrink, E.;Wei, H. G.;Koenig, M.
通讯作者：
Koenig, M.
影响因子：
3.3
作者：
H. Shiraga;H. Nagatomo;W. Theobald;A. A. Solodov-A.;M. Tabak
通讯作者：
H. Shiraga;H. Nagatomo;W. Theobald;A. A. Solodov-A.;M. Tabak