Temperature dependence and single-mode tuning behavior of second-harmonic generation in quantum cascade lasers | Zendy

Claire Gmachl | Zendy; Nina Owschimikow | Zendy; Alexey Belyanin | Zendy; A. M. Sergent | Zendy; D. L. Sivco | Zendy; Milton L. Peabody | Zendy; A. Y. Cho | Zendy; Federico Capasso | Zendy

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Temperature dependence and single-mode tuning behavior of second-harmonic generation in quantum cascade lasers

Author(s) -

Claire Gmachl,

Nina Owschimikow,

Alexey Belyanin,

A. M. Sergent,

D. L. Sivco,

Milton L. Peabody,

A. Y. Cho,

Federico Capasso

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1703850

Subject(s) - cascade , laser , second harmonic generation , optoelectronics , wavelength , materials science , nonlinear optics , nonlinear system , quantum well , optics , atomic physics , physics , chemistry , chromatography , quantum mechanics

Second-harmonic generation (SHG) is reported in quantum cascade (QC) lasers with active regions that also support nonlinear cascades with large second order nonlinear susceptibility. SHG has been measured from 10 up to 250 K heat sink temperature, with about 1 μW of nonlinear power at 10 K and about 50 nW at 250 K. Single-mode and tunable SHG at 3.5 μm wavelength has been measured from single-mode QC distributed feedback lasers operating at the fundamental pump wavelength of 7.0 μm. Thermal tuning results in a tuning rate for the SHG emission of ∼0.2 nm/K for temperatures above ∼100 K.

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