Injection locked multi-section gain-coupled dual mode DFB laser for terahertz generation
✍ Scribed by Mohammed Al-Mumin; Cheolhwan Kim; Inwoong Kim; Nazar Jaafar; Guifang Li
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 372 KB
- Volume
- 275
- Category
- Article
- ISSN
- 0030-4018
No coin nor oath required. For personal study only.
✦ Synopsis
A dual mode multi-section gain-coupled distributed feedback laser with tunable mode spacing is subharmonically injection locked at 0.315 THz. The injected signal consists of an optical comb with harmonics 35 GHz apart and a bandwidth of approximately 1.9 THz. The optical comb is a result of strong four-wave mixing in a highly-nonlinear dispersion-shifted fiber. In order to observe locking of the multi-section laser, the output is optically downconverted to RF frequencies using the same optical comb. The locked multi-section DFB laser is a coherent and tunable optical source suitable for continuous-wave terahertz generation systems.