Electrical diagnositics of quantum cascade lasers

Peter G. Eliseev; Chi Yang; Tim C. Newell; Ron Kaspi

doi:10.1117/12.2076663

10 March 2015 Electrical diagnositics of quantum cascade lasers

Peter G. Eliseev, Chi Yang, Tim C. Newell, Ron Kaspi

Proceedings Volume 9382, Novel In-Plane Semiconductor Lasers XIV; 93821R (2015) https://doi.org/10.1117/12.2076663
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

The analysis of I-V and I-L curves in mid-IR quantum cascade lasers operating at room temperature is performed. When the ohmic component of the device resistance in the I-V curve is subtracted, the current I can be approximated by the exponential function, I = I_s exp(eV_j/ε) where I_s is the saturation current, Vj is the n-n junction voltage, and ε is an energy parameter related to the tunneling mechanism which enables filling of upper states and emptying of lower states of the laser transition. Values of εare found to be in 0.68-1.45 eV range, and when divided by the number of stages in the cascade, the tunneling parameter of each stage is determined. The threshold related “kink” of differential I-V curves is shown. The effect of voltage saturation above the laser threshold is observed. Thus, the possibility of determination of the threshold using electrical measurements in quantum cascade lasers has been demonstrated.

Citation Download Citation

Peter G. Eliseev, Chi Yang, Tim C. Newell, and Ron Kaspi "Electrical diagnositics of quantum cascade lasers", Proc. SPIE 9382, Novel In-Plane Semiconductor Lasers XIV, 93821R (10 March 2015); https://doi.org/10.1117/12.2076663

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