Generation of light through second-order nonlinear processes in quantum cascade lasers

Author

Gmachl, Claire ; Belyanin, Alexey ; Owschimikow, Nina ; Kocharovsky, Vitaly ; Capasso, Federico ; Sivco, Deborah L. ; Peadbody, Milton L. ; Sergent, A.Michael ; Cho, Alfred Y.

Author_Institution

Bell Labs., Lucent Technol., Murray Hill, NJ, USA

fYear

2003

fDate

6-6 June 2003

Abstract

We demonstrate efficient intracavity nonlinear interaction of laser modes in quantum cascade (QC) lasers with resonant nonlinear optical intersubband transitions. Sum-frequency and second-harmonic generation at 4.1 and 3.6 and 4.7 /spl mu/m wavelength has been demonstrated for a two-wavelength QC laser emitting at the fundamental wavelengths 7.1 and 9.5 /spl mu/m. In a structure optimized for second harmonic generation, we measure 1.5 /spl mu/W of nonlinear power at 3.7 /spl mu/m wavelength together with 930 mW of fundamental power at 7.5 /spl mu/m wavelength. The experimental results are in very good agreement with the calculations.

Keywords

laser cavity resonators; laser modes; optical frequency conversion; optical harmonic generation; quantum cascade lasers; 1.5 muW; 3.6 micron; 3.7 micron; 4.1 micron; 4.7 micron; 7.1 micron; 7.5 micron; 9.5 micron; 930 mW; efficient intracavity; laser modes; light generation; nonlinear interaction; quantum cascade lasers; resonant nonlinear optical intersubband transition; second-harmonic generation; second-order nonlinear processes; sum-frequency generation; Laser modes; Laser transitions; Nonlinear optics; Optical films; Optical harmonic generation; Optical mixing; Optical pumping; Pump lasers; Quantum cascade lasers; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2003. CLEO '03. Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-748-2

Type

conf

Filename

1297714