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Journal Articles Optics Letters Year : 2017

Pump-probe micro-spectroscopy by means of an ultra-fast acousto-optics delay line

Xavier Audier
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Naveen Balla
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Herve Rigneault

Abstract

We demonstrate femtosecond pump-probe transient absorption spectroscopy using a programmable dispersive filter as an ultra-fast delay line. Combined with fast synchronous detection this delay line allows for recording of 6 ps decay traces at 34 kHz. With such acquisition speed we perform single point pump-probe spectroscopy on bulk samples in 80 µs and hyperspectral pump-probe imaging over a field of view of 100 µm in less than a second. The usability of the method is illustrated on a showcase experiment to image and discriminate two pigments in a mixture.
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Dates and versions

hal-01784501 , version 1 (03-05-2018)

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Xavier Audier, Naveen Balla, Herve Rigneault. Pump-probe micro-spectroscopy by means of an ultra-fast acousto-optics delay line. Optics Letters, 2017, 42 (2), pp.294. ⟨10.1364/OL.42.000294⟩. ⟨hal-01784501⟩
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