Coaxial pump-probe measurement using color-selective double pulses generated by a spatial-light-modulator-based optical pulse shaper

• DOI: 10.1364/optcon.483681
• Publication Date: 2023-04-14T10:00:06Z
• Authors: Hisanari Takahashi; Koyo Watanabe; Kyohhei Shigematsu; Takashi Inoue; Hiroshi Satozono
• Keywords: Coaxial

Coaxial time-resolved spectroscopy (TRS) based on a pump–probe technique using color-selective double pulse (CSDP) is proposed. The CSDP, generated an optical shaper (OPS), was composed of different spectral components. Coaxially propagating CSDPs were used for pump and weak probe pulses. As proof concept, we evaluated the transient absorption ZnTe crystal from difference between temporal waveforms output chirped with without OPS. Upon changing width pulse, measured reaction 0.2 ps, which agreed that via conventional TRS.