A A Belyanin et al 2001 Nanotechnology 12 450 doi:10.1088/0957-4484/12/4/313
A A Belyanin1,2, F Capasso3, V V Kocharovsky1,2, Vl V Kocharovsky2, D S Pestov2 and M O Scully1,4
Show affiliationsA new scheme for the generation of coherent radiation on the intersubband transition without population inversion between subbands is presented. The scheme is based on the resonant nonlinear mixing of the optical laser fields on the two interband transitions that are intracavity generated in the same active region. The two-wavelength lasing on the interband transitions can be achieved at a substantially lower threshold current than gain on the intersubband transition. This may ensure cw room-temperature operation. Due to the parametric, inversionless nature of generation, the lasers proposed are especially promising for long-wavelength operation above 20 µm.
42.60.Jf Beam characteristics: profile, intensity, and power; spatial pattern formation
42.60.Lh Efficiency, stability, gain, and other operational parameters
42.55.Px Semiconductor lasers; laser diodes
42.60.By Design of specific laser systems
61.80.Ba Ultraviolet, visible, and infrared radiation effects (including laser radiation)
Issue 4 (December 2001)
Received 7 July 2001
Published 27 November 2001
A A Belyanin et al 2001 Nanotechnology 12 450
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