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

Author Affiliations
1 State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China
3 Tongji University, Shanghai 200092, China
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.

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