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Measurement of gain and losses of a midinfrared quantum cascade laser by wavelength chirping spectroscopy
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10.1063/1.3089570
/content/aip/journal/apl/94/8/10.1063/1.3089570
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/8/10.1063/1.3089570
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Sketch of the experimental setup: M1 is a reflective objective, while M2 is a high numerical aperture objective. (b) Time evolution of the DFB wave number. (c) Average emitted power (red line) and voltage (black line) as functions of the current density injected in the FP device. Measurements have been performed at room temperature in pulsed operation ( pulse width and 10 kHz repetition rate).

Image of FIG. 2.
FIG. 2.

(a) DFB transmitted intensity as a function of the DFB wavelength for the TE polarization at zero current (continuous gray line) and at (dashed line). The fit by an Airy function is shown by the (blue) circles. (b) DFB transmitted intensity as a function of the DFB wavelength for the TM polarization for various current densities injected in the FP laser. From the lowest to the highest transmission maximum: 1.6, 1.9, 2.2, 2.5, 2.8, 3.1, 3.5, and .

Image of FIG. 3.
FIG. 3.

Evolution of as a function of the current density injected in the FP. The error bar has been deduced from a statistic on several measurements and takes into account the acquisition noise.

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/content/aip/journal/apl/94/8/10.1063/1.3089570
2009-02-24
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Measurement of gain and losses of a midinfrared quantum cascade laser by wavelength chirping spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/94/8/10.1063/1.3089570
10.1063/1.3089570
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