Detection of terahertz radiation from quantum cascade laser using vanadium oxide microbolometer focal plane arrays

Naoki Oda; Hajime Yoneyama; Tokuhito Sasaki; Masahiko Sano; Seiji Kurashina; Iwao Hosako; Norihiko Sekine; Takayuki Sudoh; Tomoko Irie

doi:10.1117/12.781630

1 May 2008 Detection of terahertz radiation from quantum cascade laser using vanadium oxide microbolometer focal plane arrays

Naoki Oda, Hajime Yoneyama, Tokuhito Sasaki, Masahiko Sano, Seiji Kurashina, Iwao Hosako, Norihiko Sekine, Takayuki Sudoh, Tomoko Irie

Author Affiliations +

Proceedings Volume 6940, Infrared Technology and Applications XXXIV; 69402Y (2008) https://doi.org/10.1117/12.781630
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

The authors tried real-time imaging of THz radiation from Quantum Cascade Laser (QCL), using vanadium oxide (VOx) microbolometer focal plane arrays (FPAs) of 320x240 with pitches of 37 μm and 23.5 μm as well as 640x480 with 23.5μm pitch. The QCL has such parameters as 3.1 THz emission frequency (97μm in wavelength), 300-400 nsec pulse width, 1.07 msec repetition period, 30 mW peak intensity, 15K operation temperature. The THz radiation from QCL is collimated by off-axis parabola (OAP) and focused on FPA by another OAP. The 10 μm range infrared radiation from scene is blocked by sapphire disk or metal mesh filter. Noise Equivalent Power (NEP) at 3.1 THz is estimated to be 200~400 pW.

Citation Download Citation

Naoki Oda, Hajime Yoneyama, Tokuhito Sasaki, Masahiko Sano, Seiji Kurashina, Iwao Hosako, Norihiko Sekine, Takayuki Sudoh, and Tomoko Irie "Detection of terahertz radiation from quantum cascade laser using vanadium oxide microbolometer focal plane arrays", Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 69402Y (1 May 2008); https://doi.org/10.1117/12.781630

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