Dual-comb coherent Raman spectroscopy with lasers of 1-GHz pulse repetition frequency
2017; Optica Publishing Group; Volume: 42; Issue: 2 Linguagem: Inglês
10.1364/ol.42.000318
ISSN1539-4794
AutoresKathrin J. Mohler, Bernhard J. Bohn, Ming Yan, Gwenaëlle Mélen, Theodor W. Hänsch, N. Picqué,
Tópico(s)Spectroscopy and Laser Applications
ResumoWe extend the technique of multiplex coherent Raman spectroscopy with two femtosecond mode-locked lasers to oscillators of a pulse repetition frequency of 1 GHz. We demonstrate a spectra of liquids, which span 1100 cm-1 of Raman shifts. At a resolution of 6 cm-1, their measurement time may be as short as 5 μs for a refresh rate of 2 kHz. The waiting period between acquisitions is improved 10-fold compared to previous experiments with two lasers of 100-MHz repetition frequencies.
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