Frequency combs for cavity cascades: OPO combs and graphene-coupled cavities

Frequency combs can be used directly, for example as a highly precise spectroscopic light source. They can also be used indirectly, as a bridge between devices whose high precision requirements would normally make them incompatible. Here, we demonstrate two ways that a frequency comb enables new tec...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2017-01, Vol.50 (1), p.14003
Main Authors: Lee, Kevin F, Kowzan, Grzegorz, Lee, C-C, Mohr, C, Jiang, Jie, Schunemann, Peter G, Schibli, T R, Maslowski, Piotr, Fermann, M E
Format: Article
Language:English
Subjects:
cavity-enhanced spectroscopy
frequency comb
optical parametric oscillator
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Summary:Frequency combs can be used directly, for example as a highly precise spectroscopic light source. They can also be used indirectly, as a bridge between devices whose high precision requirements would normally make them incompatible. Here, we demonstrate two ways that a frequency comb enables new technologies by matching optical cavities. One cavity is the laser oscillator. A second cavity is a low-threshold doubly-resonant optical parametric oscillator (OPO). Extending optical referencing to the doubly-resonant OPO turns the otherwise unstable device into an extremely precise midinfrared frequency comb. Another cavity is an optical enhancement cavity for amplifying spectral absorption in a gas. With the high speed of a graphene-modulated frequency comb, we can couple a frequency comb directly into a high-finesse cavity for trace gas detection.
ISSN:0953-4075
1361-6455
DOI:10.1088/1361-6455/50/1/014003