Peak optical power and thermal performance of quantum cascade lasers

Gaetano Scamarcio; Mariano Troccoli; Vincenzo Spagnolo

doi:10.1117/12.447637

6 November 2001 Peak optical power and thermal performance of quantum cascade lasers

Gaetano Scamarcio, Mariano Troccoli, Vincenzo Spagnolo

Proceedings Volume 4453, Materials and Devices for Photonic Circuits II; (2001) https://doi.org/10.1117/12.447637
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

A novel injector design allows to increase the peak optical power of quantum cascade (QC) lasers with GaInAs/AlInAs superlattice active regions. At wavelengths of 8.4 micrometers peak powers of 2.2 W per facet, corresponding to 88 mW/stage, have been measured at operating temperatures less than 80 K. The laser output power grows steadily above threshold with a slope efficiency of 160 mW/A up to currents 6 times larger than the threshold one, displaying the widest reported dynamic range without any sign of gain saturation. In order to measure the facet temperature profile and the active region thermal resistance, a micro-probe band-to-band photoluminescence technique is developed and tested on GaAs/Al_0.33Ga_0.67As and GaInAs/AlInAs/InP three-wells QC lasers. Comparison between substrate-side and epilayer-side mounted devices shows the superior thermal dissipation capacity of the latter and explains their better performance with respect to threshold current and maximum operating temperature.

Citation Download Citation

Gaetano Scamarcio, Mariano Troccoli, and Vincenzo Spagnolo "Peak optical power and thermal performance of quantum cascade lasers", Proc. SPIE 4453, Materials and Devices for Photonic Circuits II, (6 November 2001); https://doi.org/10.1117/12.447637

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available