High-resolution THz gain measurements in optically pumped ammonia
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F18%3A10239677" target="_blank" >RIV/61989100:27640/18:10239677 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/18:10239677
Result on the web
<a href="https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-16-21242" target="_blank" >https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-16-21242</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OE.26.021242" target="_blank" >10.1364/OE.26.021242</a>
Alternative languages
Result language
angličtina
Original language name
High-resolution THz gain measurements in optically pumped ammonia
Original language description
This study is aimed at the evaluation of THz gain properties in an optically pumped NH3 gas. NH3 molecules undergo rotational-vibrational excitation by mid-infrared (MIR) optical pumping provided by a MIR quantum cascade laser (QCL) which enables precise tuning to the NH3 infrared transition around 10.3 µm. Pure inversion transitions, (J = 3, K = 3) at 1.073 THz and (J = 4, K = 4) at 1.083 THz were selected. The THz measurements were performed using a THz frequency multiplier chain. The results show line profiles with and without optical pumping at different NH3 pressures, and with different MIR tuning. The highest gain at room temperature under the best conditions obtained during single pass on the (3,3) line was 10.1 dBxm-1 at 26 µbar with a pumping power of 40 mW. The (4,4) line showed lower gain of 6.4 dBxm-1 at 34 µbar with a pumping power of 62 mW. To our knowledge these THz gains are the highest measured in a continuous-wave MIR pumped gas. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
OPTICS EXPRESS
ISSN
1094-4087
e-ISSN
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Volume of the periodical
26
Issue of the periodical within the volume
16
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
21242-21248
UT code for WoS article
000440803600135
EID of the result in the Scopus database
2-s2.0-85051269899