Evaluation of Thermal Crosstalk in Quantum Cascade Laser Arrays

Author

Soibel, A. ; Mansour, K. ; Sivco, D.L. ; Cho, A.Y.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA

Volume

19

Issue

6

fYear

2007

fDate

3/15/2007 12:00:00 AM

Firstpage

375

Lastpage

377

Abstract

The continuous-wave operation, thermal crosstalk measurements, and thermal modeling of a quantum cascade (QC) laser array are presented. Measurements and thermal modeling predict that the thermal crosstalk between array elements can be minimized by improving the heat management when the spacing of neighboring laser elements is greater than 500 mum. The output power of the demonstrated QC laser array significantly exceeds the output power of the individual lasers in the array. This shows the potential of the QC arrays as a candidate for the realization of high-power optical sources in mid-infrared (3-20 mum) spectral range

Keywords

infrared sources; optical crosstalk; quantum cascade lasers; semiconductor laser arrays; thermo-optical effects; 3 to 20 mum; array elements; continuous-wave operation; heat management; high-power optical sources; laser elements; midinfrared spectral range; quantum cascade laser arrays; thermal crosstalk; thermal modeling; Crosstalk; Laser modes; Laser radar; Laser theory; Laser transitions; Optical arrays; Power generation; Power lasers; Quantum cascade lasers; Semiconductor laser arrays; Semiconductor laser arrays;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.891888

Filename

4116772