Spectral phase shaping for non-linear spectroscopy and imaging

Chemically selective imaging by spectral phase shaping for broadband CARS around 3000 cm^−1

“…We use the same pulse for the pump and probe fields. Both lasers have a repetition rate of 80 MHz and the lasers are synchronized by an electronic locking system [15].…”

Tailoring pulses for coherent Raman microscopy

“…A reduction of the residual timing jitter to 60 fs rms in a bandwidth of 0.04 to 100 Hz has been achieved [56].…”

“…The amplified and filtered signals from both photodiodes are then combined in a mixer, which extracts the difference between the two signals. The difference is regulated to zero to avoid sensitivity to amplitude fluctu- [56].…”

“…With the electronic feedback, there is residual timing jitter between the pulses, in the order of a couple of picoseconds, and low frequency drift caused by changes in the pathlength through the coaxial cables [56]. Because the laser pulses are 70 fs and 10 ps in duration, this timing jitter will have a substantial effect on the temporal overlap between…”

“…The calibration techniques described in this section are based on earlier work by Dr. Sytse Postma [56]. The techniques described here are aimed at the calibration of a 1D SLM that is used in a 4-f zero-dispersion spectral phase shaping setup [86].…”