Integrated terahertz pulse generation and amplification in quantum cascade lasers

S. S. Dhillon; S. Sawallich; N. Jukam; D. Oustinov; J. Madéo; R. Rungsawang; S. Barbieri; P. Filloux; C. Sirtori; X. Marcadet; J. Tignon

doi:10.1117/12.871526

24 January 2011 Integrated terahertz pulse generation and amplification in quantum cascade lasers

S. S. Dhillon, S. Sawallich, N. Jukam, D. Oustinov, J. Madéo, R. Rungsawang, S. Barbieri, P. Filloux, C. Sirtori, X. Marcadet, J. Tignon

Author Affiliations +

Proceedings Volume 7945, Quantum Sensing and Nanophotonic Devices VIII; 79450B (2011) https://doi.org/10.1117/12.871526
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Integrated terahertz (THz) pulse generation and amplification in a THz quantum cascade laser (QCL) is demonstrated. Intra-cavity THz pulses are generated by exciting the facet of the quantum cascade laser with an ultrafast Ti:Sapphire laser (~100fs) and detected using electro-optic sampling. Maximum THz field emission is found with an interband transition of 1.535eV (809nm) and by narrowing the excitation laser bandwidth to ~3THz. These resonance conditions correspond to the narrowband excitation of the quantum cascade miniband, indicating that the THz pulse is generated by the photo-excited carriers that are accelerated by the applied field. The generated pulse is subsequently amplified by the narrowband gain of the laser as it propagates through the QCL cavity. As an integrated THz generator-amplifier, the technique avoids the issues associated with the coupling of external THz pulses into sub-wavelength dimensioned cavities.

Citation Download Citation

S. S. Dhillon, S. Sawallich, N. Jukam, D. Oustinov, J. Madéo, R. Rungsawang, S. Barbieri, P. Filloux, C. Sirtori, X. Marcadet, and J. Tignon "Integrated terahertz pulse generation and amplification in quantum cascade lasers", Proc. SPIE 7945, Quantum Sensing and Nanophotonic Devices VIII, 79450B (24 January 2011); https://doi.org/10.1117/12.871526

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