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Laser power-meter comparison at far-infrared wavelengths and terahertz frequencies

Lehman, John and Dowell, Marla and Popovic, Nina Basta and Betz, Kerry and Grossman, Erich (2012) Laser power-meter comparison at far-infrared wavelengths and terahertz frequencies. Metrologia, 49 (4). Art. No. 483. ISSN 0026-1394. https://resolver.caltech.edu/CaltechAUTHORS:20120904-084843431

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Abstract

We have evaluated the responsivity of seven different thermal detectors compared to an electrically calibrated photoacoustic reference detector at 119 µm (2.5 THz) and 394 µm (0.76 THz) laser wavelengths. Among the thermal detectors is an electrically calibrated thermopile having a vertically aligned carbon nanotube array as the absorber. We document the uncertainty contributions attributable to the photoacoustic reference detector along with a definition of a calibration factor based on the measurement protocol. The expanded relative uncertainty (k = 2) and a calibration factor of each detector are tabulated.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0026-1394/49/4/583DOIArticle
ORCID:
AuthorORCID
Betz, Kerry0000-0001-9118-5909
Additional Information:© 2012 Contribution of the US government; not subject to copyright. Received 2 April 2012, in final form 1 June 2012; Published 5 July 2012. The authors thank Malcolm White for helpful discussions regarding the data analysis.
Issue or Number:4
Classification Code:PACS: 85.60.Gz; 85.35.Kt; 06.20.fb; 07.20.Dt
Record Number:CaltechAUTHORS:20120904-084843431
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120904-084843431
Official Citation:Laser power-meter comparison at far-infrared wavelengths and terahertz frequencies John Lehman et al 2012 Metrologia 49 583
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33811
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:10 Sep 2012 17:47
Last Modified:07 Jul 2020 19:58

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