Journal
APPLIED PHYSICS EXPRESS
Volume 7, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.7.022402
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Funding
- KAKENHI from the Japan Society for the Promotion of Science [23104713, 23241034, 25104712]
- Grants-in-Aid for Scientific Research [23241034, 25800177, 23760045, 25104712] Funding Source: KAKEN
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We propose a scheme for frequency-resolved single-shot spectroscopy with an echelon mirror. The echelon mirror is employed to generate spatially encoded time delays for the white-light continuum probe beam; it produces a temporal step of 66 fs and an overall time delay of 33 ps. We demonstrate broadband pump-probe imaging spectroscopy and present time-frequency two-dimensional images of the transient absorption of beta-carotene between 420 and 630 nm with single-shot detection. The results show that this technique is a powerful tool for observing the ultrafast, broadband transient dynamics of materials that exhibit irreversible reactions or deterioration by laser pulse irradiation. (C) 2014 The Japan Society of Applied Physics
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