Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA.
Opt Lett. 2009 Dec 15;34(24):3857-9. doi: 10.1364/OL.34.003857.
Single-laser-shot temperature measurements at a data rate of 1 kHz employing femtosecond coherent anti-Stokes Raman scattering (fs-CARS) spectroscopy of N(2) are demonstrated. The measurements are performed using a chirped-probe pulse to map the time-dependent frequency-spread dephasing of the Raman coherence, which is created by approximately 80-fs pump and Stokes beams, into the spectrum of the coherent anti-Stokes Raman scattering signal pulse. Temperature is determined from the spectral shape of the fs-CARS signal for probe delays of approximately 2 ps with respect to the pump-Stokes excitation. The accuracy and precision of the measurements for the 300-2400 K range are found to be approximately 1%-6% and approximately 1.5%-3%, respectively.
利用飞秒相干反斯托克斯拉曼散射（fs-CARS）光谱技术，以 1 kHz 的数据速率对氮气进行单激光射击温度测量。该测量使用啁啾探测脉冲来绘制拉曼相干的随时间变化的频散去相位，该相干由大约 80fs 的泵浦和斯托克斯光束产生，并将其映射到相干反斯托克斯拉曼散射信号脉冲的光谱中。对于相对于泵浦-斯托克斯激发的大约 2ps 的探测延迟，通过 fs-CARS 信号的光谱形状来确定温度。在 300-2400K 的范围内，测量的精度和准确性分别约为 1%-6%和 1.5%-3%。
