Ultra-broadband IR and THz generation and detection with ultrashort pulses

Masaaki Ashida; Eiichi Matsubara; Ikufumi Katayama

doi:10.1117/12.2042829

20 February 2014 Ultra-broadband IR and THz generation and detection with ultrashort pulses

Masaaki Ashida, Eiichi Matsubara, Ikufumi Katayama

Proceedings Volume 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII; 896409 (2014) https://doi.org/10.1117/12.2042829
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

One of the most important techniques in modern optical science is the generation of phase-locked pulses. We review two different approaches to achieve the broadband generation and detection: photoconductive antenna and air-plasma method, and show the application to spectroscopy. We investigated dependences of the detection sensitivity on the growth and annealing conditions of antenna substrate, antenna structure, and the gate pulse duration. We successfully generated ultra-broadband phase-locked pulses in the terahertz and infrared regions (up to ∼200 THz) using a combination of organic nonlinear crystals and 5-fs ultrashort laser pulses, which is directly detected by an optimized photoconductive antenna. With a combination of air plasma and intense 10-fs pulses, we also achieved the generation and detection of ultra-broadband phase-locked pulses continuously from the terahertz region to the near-infrared region. The methods are applied to the spectroscopy of superconducting gaps. Our results demonstrate that the broadband phase-locked pulses can easily be generated and detected without explicit carrier envelope phase stabilization, and can be used for broadband spectroscopy.

Citation Download Citation

Masaaki Ashida, Eiichi Matsubara, and Ikufumi Katayama "Ultra-broadband IR and THz generation and detection with ultrashort pulses", Proc. SPIE 8964, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIII, 896409 (20 February 2014); https://doi.org/10.1117/12.2042829

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