Harmonic mode-locking of THz quantum cascade lasers (Conference Presentation)

Hanond Nong; Feihu Wang; Valentino Pistore; Juliette Mangeney; Jerome Tignon; Sukhdeep Dhillon

doi:10.1117/12.2507995

8 March 2019 Harmonic mode-locking of THz quantum cascade lasers (Conference Presentation)

Hanond Nong, Feihu Wang, Valentino Pistore, Juliette Mangeney, Jerome Tignon, Sukhdeep Dhillon

Proceedings Volume 10926, Quantum Sensing and Nano Electronics and Photonics XVI; 109261F (2019) https://doi.org/10.1117/12.2507995
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Despite their ultrafast dynamics, modelocking of THz QCLs has been shown recently as a robust method to generate short THz pulses with pulse trains as short as ~4ps at a central frequency of ~2.5THz. This opens up applications of QCLs to synthesizer controlled frequency combs as well as operation of QCLs in more exotic modelocked regimes. In this work we demonstrate for the first time harmonic active modelocking of QCLs where pulses are generated at a harmonic of the round trip frequency. This is achieved by active modelocking at the second harmonic of the QCL fundamental round trip frequency, generating a short pulse train with two pulses per round-trip. This realisation potentially allows for higher average power from modelocked QCLs, modulated at multiple harmonics of the fundamental frequency, and is ideally adapted to the QCLs ultrafast dynamics with modulation beyond 60 GHz attainable.

Conference Presentation

Citation Download Citation

Hanond Nong, Feihu Wang, Valentino Pistore, Juliette Mangeney, Jerome Tignon, and Sukhdeep Dhillon "Harmonic mode-locking of THz quantum cascade lasers (Conference Presentation)", Proc. SPIE 10926, Quantum Sensing and Nano Electronics and Photonics XVI, 109261F (8 March 2019); https://doi.org/10.1117/12.2507995

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