Surface-emitting terahertz lasers with watt-level output power and electrical tunability

Sushil Kumar

doi:10.1117/12.2612425

9 March 2022 Surface-emitting terahertz lasers with watt-level output power and electrical tunability

Sushil Kumar

Proceedings Volume PC12021, Novel In-Plane Semiconductor Lasers XXI; PC120210E (2022) https://doi.org/10.1117/12.2612425
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Different phase-locking schemes are developed for surface-emitting terahertz quantum-cascade lasers (QCLs) with watt-level output power and radiating in symmetric single-lobed beams. In the first-scheme, multiple metallic microcavities are coupled through surface-plasmon-polaritons traveling in surrounding medium of cavities, that leads to peak-power output of 2.03W for a single-mode 3.3THz QCL with a slope-efficiency of 1.57W/A. In the second-scheme, a phase-locking scheme with hybrid second- and fourth-order Bragg gratings is demonstrated to realize a multi-mode surface-emitting THz QCL with 2.13W output power. Both QCLs operate at ~60K. Preliminary data for a scheme to achieve electrical tunability of such lasers is also reported.

Conference Presentation

Citation Download Citation

Sushil Kumar "Surface-emitting terahertz lasers with watt-level output power and electrical tunability", Proc. SPIE PC12021, Novel In-Plane Semiconductor Lasers XXI, PC120210E (9 March 2022); https://doi.org/10.1117/12.2612425

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