Accession Number:

AD1021615

Title:

Coherent Power Combination of Two Master-Oscillator-Power Amplifier (MOPA) Semiconductor Lasers Using Optical Phase Lock Loops

Descriptive Note:

Journal Article - Open Access

Corporate Author:

California Institute of Technology Pasadena United States

Report Date:

2007-03-19

Pagination or Media Count:

5.0

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.

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE