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arXiv · 1604.05149

Frequency Comb Assisted Broadband Precision Spectroscopy with Cascaded Diode Lasers

Junqiu Liu·Victor Brasch·Martin H. P. Pfeiffer·Arne Kordts·Ayman N. Kamel·Hairun Guo·Michael Geiselmann·Tobias J. Kippenberg
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Abstract

Frequency comb assisted diode laser spectroscopy, employing both the accuracy of an optical frequency comb and the broad wavelength tuning range of a tunable diode laser, has been widely used in many applications. In this letter we present a novel method using cascaded frequency agile diode lasers, which allows extending the measurement bandwidth to 37.4 THz (1355 to 1630 nm) at MHz resolution with scanning speeds above 1 THz/s. It is demonstrated as a useful tool to characterize a broadband spectrum for molecular spectroscopy and in particular it enables to characterize the dispersion of integrated microresonators up to the fourth order.

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Junqiu Liu, Victor Brasch, Martin H. P. Pfeiffer, Arne Kordts, Ayman N. Kamel, Hairun Guo, Michael Geiselmann, Tobias J. Kippenberg. 2016-04-18. Frequency Comb Assisted Broadband Precision Spectroscopy with Cascaded Diode Lasers. https://doi.org/10.1364/ol.41.003134

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