Power-boosted difference-frequency source for high-resolution infrared spectroscopy

Year: 2003

Authors: Borri S., Cancio P., De Natale P., Giusfredi G., Mazzotti D., Tamassia F.

Autors Affiliation: Istituto Nazionale di Ottica Applicata (INOA); Dipartimento di Chimica Fisica e Inorganica, Università di Bologna; European Laboratory for Non-linear Spectroscopy (LENS) Dipartimento di Fisica, Università di Firenze

Abstract: We analyzed the spectroscopic performance of a difference-frequency source that utilizes a 5-W Yb-fiber amplifier for the \”signal\” radiation in order to increase the \”idler\” power generated around 4.3 mum. The amplifier is seeded by a monolithic-cavity Nd:YAG laser at 1064 nm. The intensity noise spectral density of the \”idler\” radiation was characterized. Cavity-enhanced saturated-absorption spectroscopy was also performed to test the frequency resolution. In particular, we observed the Lamb-dip spectrum of the ro-vibrational (00(0)0-00(0)1) R(0) transition of (OCO)-O-17-C-12-O-16 in natural abundance. To our knowledge, this is the first observation of that transition by the Lamb-dip technique.


Volume: 76 (4)      Pages from: 473  to: 477

KeyWords: Absorption spectroscopy; Antireflection coatings; Brillouin scattering; Fiber lasers; Laser beams; Molecular vibrations; Neodymium lasers; Optical resolving power; Second harmonic generation; Semiconductor lasers; Spectrometers; Spurious signal noise, Difference frequency generation; Intensity noise spectral density; Ytterbium fiber amplifier, Infrared spectroscopy
DOI: 10.1007/s00340-003-1133-7

Citations: 25
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