Narrow-band high-power semiconductor lasers for optical communication

0092412 - ÚPT 2008 RIV US eng C - Conference Paper (international conference)
Buchta, Zdeněk - Číp, Ondřej - Wilfert, O. - Lazar, Josef
Narrow-band high-power semiconductor lasers for optical communication.
[Výkonové úzkospektrální polovodičové lasery pro optické komunikace.]
Free-Space Laser Communications VII. (Proceedings of SPIE Vol. 6709). Bellingham: SPIE, 2007, 67091K:1-6. ISBN 978-0-8194-6857-4. ISSN 0277-786X.
[Free-Space Laser Communications /7./. San Diego (US), 28.08.2007-30.08.2007]
R&D Projects: GA ČR GA102/04/2109; GA MŠMT(CZ) LC06007; GA MŠMT 2C06012; GA AV ČR IAA200650504; GA AV ČR IAA1065303
Institutional research plan: CEZ:AV0Z20650511
Keywords : laser diode * emission linewidth * diffraction grating * optical pumping * spectroscopy
Subject RIV: BH - Optics, Masers, Lasers

We present a compact Extended Cavity Laser (ECL) system based on a high-power laser diode optimized for maximum efficiency of the Rb optical pumping process. The system represents the crucial part of the HpG (hyperpolarized gasses) production process. We concentrated on the ECL system optimization – linewidth matching and frequency stabilization – for the optical pumping process. We show that the intensity of optical feedback in the ECL laser influences linewidth and output power and it is possible to find an optimum value for the highest power spectral density at the absorption line of desire. The emission linewidth was reduced approximately 10 times with only half of the total optical power loss. The ECL system is controlled by electronic servo-loop for laser frequency stabilization.

We present a compact Extended Cavity Laser (ECL) system based on a high-power laser diode optimized for maximum efficiency of the Rb optical pumping process. The system represents the crucial part of the HpG (hyperpolarized gasses) production process. We concentrated on the ECL system optimization – linewidth matching and frequency stabilization – for the optical pumping process. We show that the intensity of optical feedback in the ECL laser influences linewidth and output power and it is possible to find an optimum value for the highest power spectral density at the absorption line of desire. The emission linewidth was reduced approximately 10 times with only half of the total optical power loss. The ECL system is controlled by electronic servo-loop for laser frequency stabilization.
Permanent Link: http://hdl.handle.net/11104/0152742