Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1538963 | Optics Communications | 2007 | 4 Pages |
Abstract
The in-phase mode selection with the amplitude compensator at a high current (I > 20 A) was analyzed theoretically and achieved experimentally in an external Talbot cavity, of length L = ZT/4. The used linear array consisted of 49 wide-aperture diodes with a diode emitter aperture a = 100 μm and a center to center period d = 200 μm. Increasing the output radiation intensity in the far-field central lobe was demonstrated, and the power of the multi-lobes was 1.57 W without the amplitude compensator and then it concentrated on the single lobe was 0.96 W by inserting the amplitude compensator in the external cavity when the injection current was 25 A. The far-field divergence of the phase locked radiation was 1.80 mrad, and the spectral FWHM of the output radiation was suppressed from 1.7 nm to 0.15 nm.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Qiang Li, Pengfei Zhao, Weirong Guo, Bo Liu,