Dynamic range enhancement of self-referenced spectral interferometry with extended time excursion method by the cascaded Kerr lens process

Yaping Xuan; Yaping Xuan; Xiong Shen; Xiong Shen; Xiong Shen; Wenhai Liang; Wenhai Liang; Yilin Xu; Yilin Xu; Renjing Chen; Renjing Chen; Shuman Du; Shuman Du; Peng Wang; Peng Wang; Jun Liu; Jun Liu; Jun Liu; Jun Liu; Ruxin Li; Ruxin Li; Ruxin Li

doi:10.1364/AO.501425

Applied Optics
Vol. 62,
Issue 28,
pp. 7441-7446
(2023)
•https://doi.org/10.1364/AO.501425

Dynamic range enhancement of self-referenced spectral interferometry with extended time excursion method by the cascaded Kerr lens process

Yaping Xuan, Xiong Shen, Wenhai Liang, Yilin Xu, Renjing Chen, Shuman Du, Peng Wang, Jun Liu, and Ruxin Li

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Yaping Xuan, Xiong Shen, Wenhai Liang, Yilin Xu, Renjing Chen, Shuman Du, Peng Wang, Jun Liu, and Ruxin Li, "Dynamic range enhancement of self-referenced spectral interferometry with extended time excursion method by the cascaded Kerr lens process," Appl. Opt. 62, 7441-7446 (2023)

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Abstract

Self-referenced spectral interferometry with extended time excursion (SRSI-ETE) is a powerful method for single-shot characterization of the temporal contrast of a high peak power laser, which has high temporal resolution but a low dynamic range. Here, a temporal contrast reduction method is proposed that uses the cascaded Kerr lens process in two thin glass plates. Combined with the SRSI-ETE method, the measurement dynamic range of the method is increased about two orders of magnitude while having a 20 fs temporal resolution and a 40 ps time window in single shot.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Subpulses	$A$	$B$	$C$	$E$	$F$
Original intensity (au)	$1.20 \times 10^{- 3}$	$8.02 \times 10^{- 6}$	$3.2 \times 10^{- 5}$	$1.09 \times 10^{- 5}$	$5.96 \times 10^{- 6}$
Intensity after the plate $A$ (au)	$2.26 \times 10^{- 2}$	$1.67 \times 10^{- 4}$	$6.2 \times 10^{- 4}$	$2.13 \times 10^{- 4}$	$9.941 \times 10^{- 5}$
Reduction coefficient $C_{r 1}$	18.8	20.8	19.37	19.5	16.68
Intensity after the plate $B$ (au)	$1.33 \times 10^{- 1}$	$8.9 \times 10^{- 4}$	$3.4 \times 10^{- 3}$	$1.26 \times 10^{- 3}$	$6.19 \times 10^{- 4}$
Reduction coefficient $C_{r 2}$	5.9	5.3	5.5	5.9	6.2
Total reduction coefficient $C_{r}$	110.9	110.2	106.5	115.1	103.4

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