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Small Business Innovation Research/Small Business Tech Transfer

Tunable, Narrow Line Width Mid-Infrared Laser Source, Phase II

Completed Technology Project

Project Introduction

Tunable, Narrow Line Width Mid-Infrared Laser Source, Phase II
The purpose of this project is to advance the technology of interband cascade (IC) lasers and their facet coatings and to design, build, and deliver to NASA a tunable, narrow linewidth mid-infrared laser source operating in the 3.2 ¡V 3.6 micron wavelength band. Initial work will develop improved IC laser active regions as well as ultra-low-reflectivity anti-reflection facet coatings. We will also develop an effective epi-side-down die attach process for IC lasers using a Au/Sn solder. The objective of this initial work is to achieve laser chips emitting in the appropriate wavelength region and operating in continuous wave mode at heat sink temperatures > 25„aC and with several 10s of mW of output power. The team will then use our extensive experience with external cavity laser sources to design, build, and deliver a versatile, tunable mid-infrared source to NASA using the developed IC laser gain chip. The delivered tunable laser source will be at a TRL level of 5 and will enable sensitive earth science trace gas measurements and enhance NASA¡¦s existing measurement capability by significantly improving the sensitivity and performance of trace gas sensing by virtue of a considerably improved source technology. More »

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