Produção Nacional
Revisado por pares
Mid-infrared optical frequency combs based on difference frequency generation for molecular spectroscopy
2015; Optica Publishing Group; Volume: 23; Issue: 20 Linguagem: Inglês
10.1364/oe.23.026814
ISSN1094-4087
AutoresFlávio C. Cruz, Daniel L. Maser, Todd A. Johnson, Gabriel Ycas, A. Klose, Fabrizio R. Giorgetta, Ian Coddington, Scott A. Diddams,
Tópico(s)Laser-Matter Interactions and Applications
ResumoMid-infrared femtosecond optical frequency combs were produced by difference frequency generation of the spectral components of a near-infrared comb in a 3-mm-long MgO:PPLN crystal. We observe strong pump depletion and 9.3 dB parametric gain in the 1.5 μm signal, which yields powers above 500 mW (3 μW/mode) in the idler with spectra covering 2.8 μm to 3.5 μm. Potential for broadband, high-resolution molecular spectroscopy is demonstrated by absorption spectra and interferograms obtained by heterodyning two combs.
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