Investigation of the spectral width of quantum cascade laser emission near 5.2 μm by a heterodyne experiment

被引:23
作者
Ganser, H
Frech, B
Jentsch, A
Mürtz, M
Gmachl, C
Capasso, F
Sivco, DL
Baillargeon, JN
Hutchinson, AL
Cho, AY
Urban, W
机构
[1] Univ Bonn, Inst Angew Phys, D-53115 Bonn, Germany
[2] Univ Dusseldorf, Inst Lasermed, D-40225 Dusseldorf, Germany
[3] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA
关键词
quantum cascade laser; line width; beat note; mid infrared; spectroscopy;
D O I
10.1016/S0030-4018(01)01441-9
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report line width measurements of a quantum cascade distributed feedback laser by a heterodyne experiment. At currents slightly above threshold and a laser output power higher than I mW, the full width at half maximum of the beat signal was narrower than 0.5 MHz, which gives us an upper limit of the laser line width. As reference laser we used a carbon monoxide laser. Both lasers were operating unstabilized in continuous wave mode emitting light at about 5.2 mum. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:127 / 130
页数:4
相关论文
共 13 条
[11]   High-performance quantum cascade lasers (λ∼11 μm) operating at high temperature (T≥425 K) [J].
Tahraoui, A ;
Matlis, A ;
Slivken, S ;
Diaz, J ;
Razeghi, M .
APPLIED PHYSICS LETTERS, 2001, 78 (04) :416-418
[12]   Quantum-cascade laser measurements of stratospheric methane and nitrous oxide [J].
Webster, CR ;
Flesch, GJ ;
Scott, DC ;
Swanson, JE ;
May, RD ;
Woodward, WS ;
Gmachl, C ;
Capasso, F ;
Sivco, DL ;
Baillargeon, JN ;
Hutchinson, AL ;
Cho, AY .
APPLIED OPTICS, 2001, 40 (03) :321-326
[13]   Kilohertz linewidth from frequency-stabilized mid-infrared quantum cascade lasers [J].
Williams, RM ;
Kelly, JF ;
Hartman, JS ;
Sharpe, SW ;
Taubman, MS ;
Hall, JL ;
Capasso, F ;
Gmachl, C ;
Sivco, DL ;
Baillargeon, JN ;
Cho, AY .
OPTICS LETTERS, 1999, 24 (24) :1844-1846