PROMOTING ACCESS TO AFRICAN RESEARCH

Journal of Applied Science and Technology

Log in or Register to get access to full text downloads.

Remember me or Register



DOWNLOAD FULL TEXT Open Access  DOWNLOAD FULL TEXT Subscription or Fee Access

Opto-electrical characteristics and tunability of mid-infrared quantum cascade Alpes Lasers

MM Dzagli, MA Mohou, KS Gadedjisso-Tossou

Abstract


Quantum Cascade Lasers (QCLs) represent advanced technology for Mid-Infra Red (MIR) and Far-Infra Red (FIR) laser sources. Experiments were conducted to investigate the optical and electrical characteristics of Alp-es SB 1487 QCLs. The laser source achieved pulsed power density on a target cavity with tunability around 7 μm. Measurements of the tunability of the QCLs as function of temperature and applied voltage were investiga-ted to identify the shift in emission wavelength. The results indicated tunability as low as 0.04 nm/V with the pulse voltage and 0.28 nm/K with the sink temperature, respectively, at emission wavelength of ~ 6.8 μm. The characteristics of QCLs confirmed the suitability for applications in bio-sensing and muonic atom spectroscopy.



AJOL African Journals Online