Compact liquid crystal waveguide Fourier transform spectrometer for real-time gas sensing in NIR spectral band

Tien-Hsin Chao; Thomas T. Lu; Scott R. Davis; Scott D. Rommel; George Farca; Ben Luey; Alan Martin; Michael H. Anderson

doi:10.1117/12.923481

23 April 2012 Compact liquid crystal waveguide Fourier transform spectrometer for real-time gas sensing in NIR spectral band

Tien-Hsin Chao, Thomas T. Lu, Scott R. Davis, Scott D. Rommel, George Farca, Ben Luey, Alan Martin, Michael H. Anderson

Author Affiliations +

Proceedings Volume 8398, Optical Pattern Recognition XXIII; 83980H (2012) https://doi.org/10.1117/12.923481
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

Jet Propulsion Lab and Vescent Photonics Inc. and are jointly developing an innovative ultra-compact (volume < 10 cm³), ultra-low power (<10 ^-3 Watt-hours per measurement and zero power consumption when not measuring), completely non-mechanical Liquid Crystal Waveguide Fourier Transform Spectrometer (LCWFTS) that will be suitable for a variety of remote-platform, in-situ measurements. These devices are made possible by novel electro-evanescent waveguide architecture, enabling "monolithic chip-scale" Electro Optic-FTS (EO-FTS) sensors. The potential performance of these EO-FTS sensors include: i) a spectral range throughout 0.4-5 μm (25000 - 2000 cm-1), ii) highresolution (Δλ≤ 0.1 nm), iii) high-speed (< 1 ms) measurements, and iv) rugged integrated optical construction. This performance potential enables the detection and quantification of a large number of different atmospheric gases simultaneously in the same air mass and the rugged construction will enable deployment on previously inaccessible platforms. The sensor construction is also amenable for analyzing aqueous samples on remote floating or submerged platforms. We have reported [1] a proof-of-principle prototype LCWFTS sensor that has been demonstrated in the near- IR (range of 1450-1600 nm) with a 5 nm resolution. In this paper, we will report the recently built and tested LCWFTS test bed and the demonstration of a real-time gas sensing applications.

Citation Download Citation

Tien-Hsin Chao, Thomas T. Lu, Scott R. Davis, Scott D. Rommel, George Farca, Ben Luey, Alan Martin, and Michael H. Anderson "Compact liquid crystal waveguide Fourier transform spectrometer for real-time gas sensing in NIR spectral band", Proc. SPIE 8398, Optical Pattern Recognition XXIII, 83980H (23 April 2012); https://doi.org/10.1117/12.923481

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