Dual-wavelength homogeneous mid-infrared quantum cascade laser

M. I. Hossain; Y. Wang; A. Belyanin; D. L. Sivco; A. M. Sergent; O. Malis

doi:10.1117/12.906048

8 February 2012 Dual-wavelength homogeneous mid-infrared quantum cascade laser

M. I. Hossain, Y. Wang, A. Belyanin, D. L. Sivco, A. M. Sergent, O. Malis

Proceedings Volume 8277, Novel In-Plane Semiconductor Lasers XI; 82770R (2012) https://doi.org/10.1117/12.906048
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We demonstrate a dual wavelength mid-infrared Quantum Cascade Laser (QCL) utilizing a single active region to emit at 5-μm and 9-μm. The novelty lies in the large energy difference between the two lasing energies, achieved through simultaneous injection into the top 2 levels of a 4-level cascade employing InGaAs/InAlAs heterostructures latticematched to InP. The gain and losses at both wavelengths were measured by two different methods, Hakki-Paoli and cutback method, and were compared with theoretical predictions. The results for the gain of the 9-μm laser from the two techniques are consistently lower than theoretical predictions. Moreover, the mid-infrared losses are larger than expected at both wavelengths. We are investigating these devices for their potential application of quantum coherence to achieve lasing without inversion. The intense fields generated by the 9-μm laser are expected to partially eliminate the resonant absorption on the transition of interest at an energy corresponding to the difference between the energies of the two lasers. Our results on the dual wavelength QCL provide insights in the detail charge transport and optical properties of this design concept and open up the possibility for future optimization of inversionless lasers.

Citation Download Citation

M. I. Hossain, Y. Wang, A. Belyanin, D. L. Sivco, A. M. Sergent, and O. Malis "Dual-wavelength homogeneous mid-infrared quantum cascade laser", Proc. SPIE 8277, Novel In-Plane Semiconductor Lasers XI, 82770R (8 February 2012); https://doi.org/10.1117/12.906048

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