Evaluating the coherence and time-domain profile of quantum cascade laser frequency combs
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- SRON Netherlands Institute for Space Research, Groningen (Netherlands)
- SRON Netherlands Institute for Space Research, Groningen (Netherlands); Delft Univ. of Technology, Delft (The Netherlands)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Recently, much attention has been focused on the generation of optical frequency combs from quantum cascade lasers. We discuss how fast detectors can be used to demonstrate the mutual coherence of such combs, and present an inequality that can be used to quantitatively evaluate their performance. We discuss several technical issues related to shifted wave interference Fourier Transform spectroscopy (SWIFTS), and show how such measurements can be used to elucidate the time-domain properties of such combs, showing that they can possess signatures of both frequency-modulation and amplitude-modulation.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1214217
- Journal Information:
- Optics Express, Journal Name: Optics Express Journal Issue: 2 Vol. 23; ISSN 1094-4087; ISSN OPEXFF
- Publisher:
- Optical Society of America (OSA)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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