论文标题
使用FS脉冲爆发的分子气体的协方差光谱法在充满气体的空心芯纤维中产生的FS脉冲爆发
Covariance spectroscopy of molecular gases using fs pulse bursts created by modulational instability in gas-filled hollow-core fiber
论文作者
论文摘要
我们提出了一种使用模量不稳定产生的嘈杂的宽带脉冲爆发的技术来探测分子气体中的非线性过程，包括红外运动拉曼转变。这些过程在嘈杂频谱的不同区域之间的关联相关性，可以通过获取单个射击光谱并计算不同频率分量之间的Pearson相关系数来检测到这些过程。数值模拟验证了实验测量结果，并用于进一步了解系统并讨论改善信号强度和频谱分辨率的方法。
We present a technique that uses noisy broadband pulse bursts generated by modulational instability to probe nonlinear processes, including infrared-inactive Raman transitions, in molecular gases. These processes imprint correlations between different regions of the noisy spectrum, which can be detected by acquiring single shot spectra and calculating the Pearson correlation coefficient between the different frequency components. Numerical simulations verify the experimental measurements and are used to further understand the system and discuss methods to improve the signal strength and the spectral resolution of the technique.
