Fabrication and testing of Bragg gratings for 1060-nm alpha-DFB lasers

Joerg Fricke; Mathias Matalla; Katrin Paschke; Reiner Guether; Arne Knauer; Frank Bugge; Hans Wenzel; Goetz Erbert

doi:10.1117/12.471994

11 March 2003 Fabricating and testing of Bragg gratings for 1060-nm α-DFB lasers

Joerg Fricke, Mathias Matalla, Katrin Paschke, Reiner Guether, Arne Knauer, Frank Bugge, Hans Wenzel, Goetz Erbert

Proceedings Volume 4947, Laser Diodes, Optoelectronic Devices, and Heterogenous Integration; (2003) https://doi.org/10.1117/12.471994
Event: Photonics Fabrication Europe, 2002, Bruges, Belgium

Abstract

In contrast to Distributed Feedback DFB) lasers for wavelengths of about 1060nm for α-DFB lasers the fabrication of Bragg gratings using conventional wafer stepper lithography is possible, due to the necessary larger grating period. The use of a wafer stepper enables us to study especially the influence of slant angle of the fabricated gratings and stripe width on optical properties of the fabricated lasers on the same wafer independent from fluctuations of the vertical structure. Best beam quality was achieved for 15° and 13.5° tilted gratings with a small period of 594nm and 658nm respectively. For optimised structures a nearly diffraction limited beam with an output power of more than 1W, a lateral far field divergence angle of θ= 0.3°, a beam quality factor M2 = 1.1 and 3.2 at 2.1W respectively, and a line width of 5.8 pm with 28dB side mode suppression rate was achieved.

Citation Download Citation

Joerg Fricke, Mathias Matalla, Katrin Paschke, Reiner Guether, Arne Knauer, Frank Bugge, Hans Wenzel, and Goetz Erbert "Fabricating and testing of Bragg gratings for 1060-nm α-DFB lasers", Proc. SPIE 4947, Laser Diodes, Optoelectronic Devices, and Heterogenous Integration, (11 March 2003); https://doi.org/10.1117/12.471994

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available