Mid-infrared virtually imaged phased array spectrometer for rapid and broadband trace gas detection

Nugent-Glandorf, Lora, Neely, Tyler, Adler, Florian, Fleisher, Adam J., Cossel, Kevin C., Bjork, Bryce, Dinneen, Tim, Ye, Jun and Diddams, Scott A. (2012) Mid-infrared virtually imaged phased array spectrometer for rapid and broadband trace gas detection. Optics Letters, 37 15: 3285-3287.

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Name Description MIMEType Size Downloads
Author Nugent-Glandorf, Lora
Neely, Tyler
Adler, Florian
Fleisher, Adam J.
Cossel, Kevin C.
Bjork, Bryce
Dinneen, Tim
Ye, Jun
Diddams, Scott A.
Title Mid-infrared virtually imaged phased array spectrometer for rapid and broadband trace gas detection
Journal name Optics Letters   Check publisher's open access policy
ISSN 0146-9592
1539-4794
Publication date 2012-08-01
Sub-type Article (original research)
Volume 37
Issue 15
Start page 3285
End page 3287
Total pages 3
Place of publication Washington, DC, United States
Publisher Optical Society of America
Collection year 2013
Language eng
Formatted abstract
We present and characterize a two-dimensional (2D) imaging spectrometer based on a virtually imaged phased array (VIPA) disperser for rapid, high-resolution molecular detection using mid-infrared (MIR) frequency combs at 3.1 and 3.8 μm. We demonstrate detection of CH4 at 3.1 μm with >3750 resolution elements spanning >80 nm with ~600 MHz resolution in a <10 μs acquisition time. In addition to broadband detection, we also demonstrate rapid, time-resolved single-image detection by capturing dynamic concentration changes of CH4 at a rate of ~375 frames per second. Changes in absorption above the noise floor of 5 × 10−4 are readily detected on the millisecond time scale, leading to important future applications such as real-time monitoring of trace gas concentrations and detection of reactive intermediates.
Keyword Frequency comb spectroscopy
Mu-M
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Non HERDC
 
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