High-power high-reliability narrow-linewidth Al-free DFB laser diode for Cs pumping (852 nm)

C. Cayron; V. Ligeret; P. Resneau; Y. Robert; O. Parillaud; M. Lecomte; M. Calligaro; S. Bansropun; J. Nagle; M. Krakowski

doi:10.1117/12.808191

3 February 2009 High-power high-reliability narrow-linewidth Al-free DFB laser diode for Cs pumping (852 nm)

C. Cayron, V. Ligeret, P. Resneau, Y. Robert, O. Parillaud, M. Lecomte, M. Calligaro, S. Bansropun, J. Nagle, M. Krakowski

Author Affiliations +

Proceedings Volume 7230, Novel In-Plane Semiconductor Lasers VIII; 72301H (2009) https://doi.org/10.1117/12.808191
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

Precise gyroscopes and atomic clocks are in high demand for positioning and flight navigation systems or measurement of fundamental constants. The development of techniques such as atom optical pumping (Cs or Rb) requires laser diodes with high power and excellent spectral (narrow linewidth) and beam qualities. For spatial applications a high reliability is required (mission lifetime is around 15 years). We have realized different studies of reliability on our Al-free DFB lasers: Catastrophically Optical Mirror Damage (COMD) evaluation, lifetest, optical and spectral measurements before and after ageing. We obtained high COMD densities (respectively 13MW/cm² in continuous wave CW and 19MW/cm² in pulsed mode. Furthermore, we have realized ageing test on these DFB laser diodes emitting at 852.12nm (D2 line of Cs). We used five different ageing conditions (power and temperature) to determine ageing properties. The extrapolated lifetimes of our DFB laser (for operating current variation equal to 100%) are higher than 140000 hours (about 15 years) for an ageing at T= 25°C and P= 40mW. This confirms the excellent potential of this Al-free technology for long life spatial mission. The Side Mode Suppression Ration (SMSR) of the aged D2 line DFB lasers remains very high with a measured change of -1.4dB ± 8dB. There are no significant drifts of the DFB laser wavelength after aging (average ~0.03 nm). We also measured the linewidth of our aged DFB lasers by the self-heterodyne technique and obtained narrow beating linewidths of around 900kHz.

Citation Download Citation

C. Cayron, V. Ligeret, P. Resneau, Y. Robert, O. Parillaud, M. Lecomte, M. Calligaro, S. Bansropun, J. Nagle, and M. Krakowski "High-power high-reliability narrow-linewidth Al-free DFB laser diode for Cs pumping (852 nm)", Proc. SPIE 7230, Novel In-Plane Semiconductor Lasers VIII, 72301H (3 February 2009); https://doi.org/10.1117/12.808191

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