Very high-average-power quantum cascade lasers by GasMBE

Steven Slivken; Manijeh Razeghi

doi:10.1117/12.507398

1 July 2003 Very high-average-power quantum cascade lasers by GasMBE

Steven Slivken, Manijeh Razeghi

Author Affiliations +

Proceedings Volume 4999, Quantum Sensing: Evolution and Revolution from Past to Future; (2003) https://doi.org/10.1117/12.507398
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

Abstract

Very high average power QCLs are demonstrated within the 5.8 - 9 μm wavelength range. At longer wavelengths, scaling of the power is demonstrated by increasing the number of emitting regions in the waveguide core. At λ = 9 μm, over 3.5 W of peak power per facet has been demonstrated at room temperature for a single 25 μm by 3 mm diode, with an average power of 150 mW at 6% duty cycle. At shorter wavelengths, highly strain-balanced heterostructures are used to create a high coduction band offset and minimize leakage current. At λ = 6 μm, utilizing a high reflective coating and epilayer-down mounting of the laser, we demonstrate 225 mW of average power from a single facet at room temperature. Increasing the conduction band offset further and optimizing the doping in the injector region has led to demonstration of > 250 mW average power (λ = 5.8 μm) at > 50% duty cycle for a 20 μm by 2 mm HR coated diode bonded epilayer-down to a copper heatsink. Also at room temperature, use of Au electroplating and wider ridges has allowed us to further demonstrate without epilayer-down bonding, 0.67 W average power at 17% duty cycle from a single 40 μm by 2 mm HR coated laser.

Citation Download Citation

Steven Slivken and Manijeh Razeghi "Very high-average-power quantum cascade lasers by GasMBE", Proc. SPIE 4999, Quantum Sensing: Evolution and Revolution from Past to Future, (1 July 2003); https://doi.org/10.1117/12.507398

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