Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4799282
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Funding
- Robert A. Welch Foundation [A1546]
- NSF [1058510]
- Division Of Ocean Sciences
- Directorate For Geosciences [1058510] Funding Source: National Science Foundation
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We use two femtosecond lasers with slightly different repetition rates to perform real-time dual frequency comb spectroscopy in the near infrared. The difference between the repetition rates is delta = 4403 Hz, yielding a minimal time interval between subsequently measured interferograms and spectra of 0.227 ms. It takes as short as 4 mu s to record a single interferogram, opening the possibility of studying dynamical processes. We work with different spectral outputs from two Erbium-doped fiber lasers and employ a grating based spectral filter in a 2f-2f setup to select the common spectral region of interest, thereby increasing the signal-to-noise ratio. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4799282]
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