论文标题
优化在高压和温度下，优化氮气中的混合旋转飞秒/皮秒相干抗Stokes Raman光谱（HR-CARS）
Optimising hybrid rotational femtosecond/picosecond coherent anti-Stokes Raman spectroscopy (HR-CARS) in nitrogen at high pressures and temperatures
论文作者
论文摘要
我们证明了混合旋转飞秒/picsecond（FS/PS）相干反stokes拉曼光谱（HR-CARS）作为高压和温度下氮气中温度测量的技术。宽带脉冲塑形器调整后的42 FS脉冲与狭窄的带宽，频率上升的5.5 PS脉冲在含有1-70 atm的压力下的含氮和300-1000 K的温度下相互作用。我们展示了在探索压力和温度方案上测量的热电偶和最佳拟合温度之间的良好定性拟合以及良好的准确性和精确度。热电偶测量和最佳拟合温度之间的总体平均百分比温度差为-0.3％，标准偏差为7.1％，显示了HR-CARS对表征高压和温度环境的适用性。
We demonstrate the use of hybrid rotational femtosecond/picosecond (fs/ps) coherent anti-Stokes Raman spectroscopy (HR-CARS) as a technique for temperature measurements in nitrogen gas at high pressures and temperatures. A broadband pulse shaper-adjusted 42 fs pulse interacts with a narrow-bandwidth, frequency-upconverted 5.5 ps pulse in a cell containing nitrogen at pressures of 1-70 atm and temperatures of 300-1000 K. A computational code is used to model spectra and fit experimental results to obtain best-fit temperatures. We demonstrate good qualitative fits as well as good accuracy and precision between thermocouple measured and best-fit temperatures over the explored pressure and temperature regimes. The overall average percentage temperature difference between thermocouple measurements and best-fit temperatures is -0.3% with a standard deviation of 7.1%, showing the suitability of HR-CARS for characterising high pressure and temperature environments.
