banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Intersubband Raman laser from double quantum wells
Rent this article for


Image of FIG. 1.
FIG. 1.

(a) Measured absorption spectra for temperatures of 70 and . The data are shifted for clarity. (b) Conduction band structure and square moduli of the wavefunctions for one period of each DQW structure.

Image of FIG. 2.
FIG. 2.

Lasing threshold curves for both samples at for resonant excitation with a fit of the experimental data points for clarity. The inset shows the coupling geometry.

Image of FIG. 3.
FIG. 3.

Peak position of the emission spectra vs pumping energy for samples A–C (points). The solid lines are the shifts expected from the absorption measurements. Sample C was designed to have a depopulation energy higher than double phonon resonance and is shown for completeness reasons but not discussed in further detail. For all samples, the shift of the peak emission with pumping wavelength follows the Raman shift. The inset shows the spectra of sample A over the whole tuning range.

Image of FIG. 4.
FIG. 4.

Comparison between absorption and lasing tuning range for sample A (a) and sample B (b) at . The lines with symbols are the integrated spectra for the corresponding pump energy. The lines give the measured absorption spectra of the transition.


Generic image for table
Table I.

Transition energies, corresponding linewidth , and peak absorption obtained in multipass 45° waveguide geometry. Energies marked by * and ** are calculated from and , respectively.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Intersubband Raman laser from GaInAs∕AlInAs double quantum wells