Abstract
A reflective outcoupler is demonstrated which can allow for stable surface emission from a quantum cascade laser and has potential for cost-effective wafer-scale manufacturing. This outcoupler is integrated with an amplified, electrically tunable laser architecture to demonstrate high power surface emission at a wavelength near 4.9 μm. Single mode peak power up to 6.7 W is demonstrated with >6 W available over a 90 cm−1 (215 nm) spectral range. A high quality output beam is realized with a simple, single-layer, anti-reflective coating. The beam shape and profile are shown to be independent of wavelength.
| Original language | English (US) |
|---|---|
| Article number | 549 |
| Journal | Scientific reports |
| Volume | 9 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 1 2019 |
Funding
This work is partially supported by Naval Air Systems Command (grant N68936-17-C-0063) and the Office of Naval Research (grant N00014-17-1-2836). Any opinions, findings and conclusions or recommendations expressed in this document are those of the author(s) and do not necessarily reflect the views of Naval Air Systems Command or the Office of Naval Research. The authors would like to acknowledge the encouragement and support of all the involved program managers, especially Dr. K.K. Law.
ASJC Scopus subject areas
- General