Broadband quantum cascade lasers from white light sources to tunable broadband single mode sources

Author

Hugi, A. ; Blaser, S. ; Beck, M. ; Terazzi, R. ; Faist, JérÔme

Author_Institution

Inst. for Quantum Electron., ETH-Zurich, Zürich, Switzerland

fYear

2010

fDate

26-30 Sept. 2010

Firstpage

49

Lastpage

50

Abstract

We present the latest advances in the field of broadband quantum cascade lasers for applications requiring broad and gapfree emission or a wide tuning range in the mid-IR. We show a QCL emitting gapfree radiation in pulsed mode from 6 to 7.7 μm capable of room-temperature continious wave operation with output powers of 170 mW at -30°C. We also demonstrate the possibility to replace the glowbar in a FTIR by a broadband free running QCL resulting an improvement of the SNR by 10-20dB.

Keywords

Fourier transform spectra; infrared spectra; laser modes; laser tuning; light sources; quantum cascade lasers; FTIR spectra; broadband quantum cascade lasers; gapfree emission; gapfree radiation; pulsed mode; room-temperature continious wave operation; signal-to-noise ratio; temperature -30 degC; temperature 293 K to 298 K; tunable broadband single mode sources; wavelength 6 mum to 7.7 mum; white light sources; Absorption; Broadband communication; Laser modes; Light sources; Power generation; Quantum cascade lasers; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Laser Conference (ISLC), 2010 22nd IEEE International

Conference_Location

Kyoto

ISSN

0899-9406

Print_ISBN

978-1-4244-5683-3

Type

conf

DOI

10.1109/ISLC.2010.5642757

Filename

5642757