Chinese Optics Letters, 2015, 13 (8): 081901, Published Online: Sep. 14, 2018
Extended transient-grating self-referenced spectral interferometry for sub-100 nJ femtosecond pulse characterization
Abstract
A geometry of transient-grating self-referenced spectral interferometry (TG-SRSI) is proposed for weak femtosecond pulse characterization. By using a reflective microscope objective (RMO), we build a compact, robust, and easy to adjust device with a higher sensitivity to pulse energy in comparison to all previous SRSI methods. A 65 nJ / ~ 40 fs / 1 kHz pulse at 800 nm is successfully characterized, which speaks to the capability of our device to characterize a weak pulse. It is expected to extend the TG-SRSI method to the characterization of femtosecond pulses from oscillators in the near future.
Xiong Shen, Jun Liu, Fangjia Li, Peng Wang, Ruxin Li. Extended transient-grating self-referenced spectral interferometry for sub-100 nJ femtosecond pulse characterization[J]. Chinese Optics Letters, 2015, 13(8): 081901.