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Coherent power combination of two Master-oscillator-power-amplifier (MOPA) semiconductor lasers using optical phase lock loops.
- Source :
-
Optics express [Opt Express] 2007 Mar 19; Vol. 15 (6), pp. 3201-5. - Publication Year :
- 2007
-
Abstract
- Using heterodyne Optical Phase-Locked Loops (OPLLs), two 1W high power 1550 nm master-oscillator-power-amplifier (MOPA) semiconductor lasers operating as current controlled oscillators are phase-locked to a 1 mW reference laser. The signals of the two MOPAs are then coherently combined and their mutual coherence is studied. In each OPLL, the acquisition range is increased to +/-1.1GHz with the help of an aided- acquisition circuit. Control of the phase of a single slave MOPA is demonstrated using a RF phase shifter. The differential phase error between two MOPAs locked to the common reference laser is typically 22 degrees.
Details
- Language :
- English
- ISSN :
- 1094-4087
- Volume :
- 15
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Optics express
- Publication Type :
- Academic Journal
- Accession number :
- 19532559
- Full Text :
- https://doi.org/10.1364/oe.15.003201