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Suppression of longitudinal modes in two-sectioned, coupled-cavity terahertz quantum-cascade lasers
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10.1063/1.2794008
/content/aip/journal/apl/91/16/10.1063/1.2794008
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/16/10.1063/1.2794008
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Figures

Image of FIG. 1.
FIG. 1.

Geometry of the TSCC laser. and denote the amplitude of the partial wave propagating to the right and left, respectively, on the left (unprimed) or right side (primed) of the interface .

Image of FIG. 2.
FIG. 2.

(a) Normalized longitudinal-mode spectrum (thick line) of sample A (, ) at for , pulse width , repetition rate , and a spectral resolution of . The vertical gray bars mark the calculated eigenfrequencies using Eq. (3). The spectrum indicated by the thin line was calculated using Eq. (4). (b) Calculated normalized modulation degree of the mode heights and (c) mode spacings. The squares and circles in (b) and (c) refer to calculated results obtained using Eqs. (3) and (4), respectively.

Image of FIG. 3.
FIG. 3.

(a) Integrated intensity and (b) longitudinal-mode spectra of sample B (, ) for and different values of . The gray spectrum was calculated using Eq. (4). The dashed line in (a) is a guide to the eye.

Image of FIG. 4.
FIG. 4.

(a) Integrated intensity vs delay and (b) corresponding mode spectra of sample C (, , , , pulse widths of ) from bottom to top for , 15, 30, 45, 53, 60, 75, 83, 100, 115, 145, 175, 190, 204, 224, and as partly indicated on the right-hand side of (b). The dots and circles refer to spectra without and with mode suppression, respectively. The vertical dashed lines in (a) indicate the region of a pulse overlap of more than 50%.

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/content/aip/journal/apl/91/16/10.1063/1.2794008
2007-10-15
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Suppression of longitudinal modes in two-sectioned, coupled-cavity GaAs∕(Al,Ga)As terahertz quantum-cascade lasers
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/16/10.1063/1.2794008
10.1063/1.2794008
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