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Theoretical and experimental study of intracavity laser absorption spectroscopy

Shrestha, Jyoti Chandra

In this thesis, a dual mode tunable gas sensor based on intracavity laser absorption spectroscopy (ICLAS) principle is investigated, both, numerically and experimentally. In order to minimize the cost and size of the gas sensor, relative intensity noise (RIN) is implemented as a detection parameter. Investigation is performed to determine the effect of injection current, operating temperature, mode spacing, and cavity length on RIN. It has been found that it is best to operate the gas sensor at smaller mode spacing and near the threshold current or at larger mode spacing and far above the threshold current for the use of RIN as the readout parameter.

Sponsor
This work was sponsored in part by B. Braun Melsungan AG, BMBF, and the European Union.
Collections
@phdthesis{urn:nbn:de:hebis:34-2015032547849,
  author    ={Shrestha, Jyoti Chandra},
  title    ={Theoretical and experimental study of intracavity laser absorption spectroscopy},
  keywords ={620 and Intracavity-Spektroskopie and Laserspektroskopie and Gassensor},
  copyright  ={https://rightsstatements.org/page/InC/1.0/},
  language ={en},
  school={Kassel, Universität Kassel, Fachbereich Elektrotechnik / Informatik},
  year   ={2015-03-25}
}