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.
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.
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.
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.
The alert did not successfully save. Please try again later.
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