Midinfrared atmospheric transmittance measurements by using the second and third harmonics of tunable TEA-CO2 lasers

Akiko Harasaki; Jun Sakuma; Toshie Itoh; Takao Chonan; Yoshiyuki Fukuyama; Ryuichi Horie; Masakatsu Sugii

doi:10.1117/12.279031

23 September 1997 Midinfrared atmospheric transmittance measurements by using the second and third harmonics of tunable TEA-CO₂ lasers

Akiko Harasaki, Jun Sakuma, Toshie Itoh, Takao Chonan, Yoshiyuki Fukuyama, Ryuichi Horie, Masakatsu Sugii

Author Affiliations +

Proceedings Volume 3125, Propagation and Imaging through the Atmosphere; (1997) https://doi.org/10.1117/12.279031
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The middle-infrared wavelength region around 3-5 m corresponds to the best optical laser band for high atmospheric transmittance and eye-safety. Middle-infrared lasers are used in laser range finders, laser radars, and so on. There are only a few reports on the atmospheric laser transmittance of these middle-infrared optical bands. This paper describes, we believe for the first time, middle-infrared atmospheric transmittance characteristics as measured by the second and third harmonics of tunable TEA-CO2 lasers. The experimental results showed that the laser transmittance at 3.4 - 3.6 m correlated well with the results calculated by the HITRAN-PC code, assuming a middle-latitude, summer condition. The measured transmittance at 4.6 - 4.8 ,um exhibited a fine-structure, probably due to the absorption of atmospheric molecules such as NO2 and H20.

Citation Download Citation

Akiko Harasaki, Jun Sakuma, Toshie Itoh, Takao Chonan, Yoshiyuki Fukuyama, Ryuichi Horie, and Masakatsu Sugii "Midinfrared atmospheric transmittance measurements by using the second and third harmonics of tunable TEA-CO₂ lasers", Proc. SPIE 3125, Propagation and Imaging through the Atmosphere, (23 September 1997); https://doi.org/10.1117/12.279031

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