Title

Spectral Stabilization Of High Efficiency Diodes And Diode Bars By External Bragg Resonator

Abstract

Adjustable spectral and angular selectivity combined with low optical losses and high laser damage thresholds of volume Bragg gratings, which are recorded in photo-thermo-refractive (PTR) glass, enabled the use of those elements as high efficient selective feedback elements for spectral narrowing and stabilization. High efficiency diodes and diode bars developed by AlfaLight and nLight companies for DARPA/SHEDS program were studied in volume Bragg lasers with PTR holographic gratings used as output coupling elements. Reflection coefficients from the front facets of the bars were varied from 0.5 to 5%. Reflection coefficients of PTR Bragg gratings were varied from 3 to 50%. It was found that for any applicable pumping level the optimal parameters of the grating could be found which provide spectral narrowing and stabilization within 0.5nm for temperature variations within ±10 K. Total power of the locked bar exceeded 97% of that for the unlocked bar.

Publication Date

1-1-2005

Publication Title

24th International Congress on Applications of Lasers and Electro-Optics, ICALEO 2005 - Congress Proceedings

Number of Pages

228-232

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2351/1.5060495

Socpus ID

33645160803 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33645160803

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