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Title: Ppb-level formaldehyde detection using a CW room-temperature interband cascade laser and a miniature dense pattern multipass gas cell

Journal Article · · Optics Express
 [1];  [2];  [2];  [3];  [2]
  1. Rice Univ., Houston, TX (United States). Dept. of Electrical and Computer Engineering; Shanxi Univ., Taiyuan (China). State Key Lab. of Quantum Optics and Quantum Optics Devices, Inst. of Laser Spectroscopy
  2. Rice Univ., Houston, TX (United States). Dept. of Electrical and Computer Engineering
  3. Sentinel Photonics, Monmouth Junction, NJ (United States)

A ppb-level formaldehyde (H2CO) sensor was developed using a thermoelectrically cooled (TEC), continuous-wave (CW) room temperature interband cascade laser (ICL) emitting at 3.59 μm and a miniature dense pattern multipass gas cell with >50 m optical path length. Performance of the sensor was investigated with two measurement schemes: direct absorption (DAS) and wavelength modulation spectroscopy (WMS). With an integration time of less than 1.5 second, a detection limit of ~3 ppbv for H2CO measurement with precision of 1.25 ppbv for DAS and 0.58 ppbv for WMS, respectively, was achieved without zero air based background subtraction. An Allan-Werle variance analysis indicated that the precisions can be further improved to 0.26 ppbv @ 300s for DAS and 69 pptv @ 90 s for WMS, respectively. Finally, a side-by-side comparison between two measurement schemes is also discussed in detail.

Research Organization:
Rice Univ., Houston, TX (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); Robert Welch Foundation
Grant/Contract Number:
AR0000538; 61275213; 61108030; C-0586; IIP-1230427
OSTI ID:
1435053
Report Number(s):
DOE-MAXION-00538-10; OPEXFF
Journal Information:
Optics Express, Vol. 23, Issue 15; ISSN 1094-4087
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 53 works
Citation information provided by
Web of Science

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An auto-correction laser photoacoustic spectrometer based on 2 f /1 f wavelength modulation spectroscopy journal January 2020
Compact CH 4 sensor system based on a continuous-wave, low power consumption, room temperature interband cascade laser journal January 2016
Ultra-high sensitive acetylene detection using quartz-enhanced photoacoustic spectroscopy with a fiber amplified diode laser and a 30.72 kHz quartz tuning fork journal January 2017
Interband cascade laser absorption sensor for real-time monitoring of formaldehyde filtration by a nanofiber membrane journal January 2018
Improved spherical mirror multipass-cell-based interband cascade laser spectrometer for detecting ambient formaldehyde at parts per trillion by volume levels journal January 2019
Analysis of overtone flexural modes operation in quartz-enhanced photoacoustic spectroscopy journal January 2016
ICL-based TDLAS sensor for real-time breath gas analysis of carbon monoxide isotopes journal January 2017
Highly sensitive and selective CO sensor using a 233 μm diode laser and wavelength modulation spectroscopy journal January 2018
Calculation model of dense spot pattern multi-pass cells based on a spherical mirror aberration journal January 2019
Mid-Infrared Tunable Laser-Based Broadband Fingerprint Absorption Spectroscopy for Trace Gas Sensing: A Review journal January 2019