Title :
Wideband frequency modulation spectroscopy using the quantum cascade laser
Author :
Whittaker, E.A. ; Kelly, J.F. ; Sharpe, S.W. ; Hartman, J.S. ; Gmachl, C. ; Capasso, F. ; Sivco, D.L. ; Baillargeon, J.N. ; Cho, A.Y.
Author_Institution :
Stevens Inst. of Technol., Hoboken, NJ, USA
Abstract :
Summary form only given. The quantum cascade (QC) laser is a promising new source for tunable, infrared laser radiation and the spectroscopic capabilities of the QC laser were recently demonstrated. In this report, we extend previous work by demonstrating wideband frequency modulation (FM) of the QC laser and the detection of FM spectroscopic signals from a weakly absorbing sample of molecules.
Keywords :
electro-optical modulation; frequency modulation; infrared spectra; quantum well lasers; spectroscopic light sources; FM spectroscopic signal detection; QC laser; quantum cascade laser; spectroscopic capabilities; tunable infrared laser radiation; weakly absorbing molecule sample; wideband frequency modulation; wideband frequency modulation spectroscopy; Distributed feedback devices; Frequency modulation; Laser feedback; Laser modes; Laser tuning; Quantum cascade lasers; Quantum well lasers; Radio frequency; Spectroscopy; Wideband;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.834072
