Room-temperature long-wavelength (λ=13.3 μm) unipolar quantum dot intersubband laser [and reply]

Author

Weber, Andreas ; Grundmann, Marius ; Ledentsov, Nikolay N. ; Krishna, Sanjay ; Bhattacharya, Pallab ; McCann, P.J. ; Namjou, K.

Author_Institution

Inst. fur Festkorperphys., Tech. Univ. Berlin

Volume

37

Issue

2

fYear

2001

fDate

1/18/2001 12:00:00 AM

Firstpage

96

Lastpage

98

Abstract

For original paper see Krishna et al., ibid., vol. 36, p.1550-1555 (2000). Krishna et al. reported a “quantum dot far infrared (λ = 13.3 μm) laser, based on transitions between discrete bound electron states in self-organised quantum dots”. Weber et al. argue that insufficient experimental evidence for such a claim was presented in the work. Krishna et al. reply to the comment and report that they have carried out further work which makes them believe that they observe dominant stimulated emission and gain in these devices, with a distinct threshold and polarisation of the output

Keywords

bound states; laser beams; laser transitions; light polarisation; photoluminescence; quantum well lasers; semiconductor quantum dots; stimulated emission; 13.3 mum; 298 K; comment; discrete bound electron states; distinct threshold; dominant stimulated emission; experimental evidence; gain; intersubband laser; laser output; polarisation; quantum dot far infrared laser; reply; room-temperature long-wavelength laser; self-organised quantum dots; transitions; unipolar quantum dot; unipolar quantum dot intersubband laser;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20010055

Filename

898279