Resolving power and sensitivity in modulation transfer stimulatedresonant Raman spectroscopy

摘要

We show that the lineshape and size of the detected signal innultra-high-resolution stimulated Raman spectroscopy computed from angeneral expression of the modulated signal are in good agreement withnthe experimental results. Using the theoretical expression of thensignal, we analyze the resolving power and the sensitivity of our Ramannspectrometer. We show that a second harmonic detection in high-frequencyntransfer modulation generates a lineshape without modulation broadening.nA 2.6-kHz-wide resonance has been obtained with iodine, mainly limitednby both the transit time and collisions