Design of new multipass gas cells with circular and elliptical crosssection
(2014) In Microwave and Optical Technology Letters 56(12). p.30033009 Abstract
 Two new types of multipass gas cells with circular and elliptical crosssections were developed. As for a cylindrical cell, the reflected rays in the circle would be an irregular trace without superposition and termination, if its central angle is a bit more than 2 pi/3 for an example. Each two adjacent reflected points have the same optical path difference and optical light passes through different optical distances before different reflection points. As for a cylindroidal cell, if the optical ray passes through one focus point of the ellipse, it must also pass through the other. The light will exit finally from the termination point of an axis. The optical distance depends on the eccentricity of the ellipse and the size of the emergent... (More)
 Two new types of multipass gas cells with circular and elliptical crosssections were developed. As for a cylindrical cell, the reflected rays in the circle would be an irregular trace without superposition and termination, if its central angle is a bit more than 2 pi/3 for an example. Each two adjacent reflected points have the same optical path difference and optical light passes through different optical distances before different reflection points. As for a cylindroidal cell, if the optical ray passes through one focus point of the ellipse, it must also pass through the other. The light will exit finally from the termination point of an axis. The optical distance depends on the eccentricity of the ellipse and the size of the emergent window. In this article, the detailed mathematical derivations of the optical multireflection traces for the two structures are presented. The unified formula is developed. It is found that these designs have small volumes and adjustable long optical paths. For example, the optical distances in the two structures are about 625 mm for a circle with 50 mm radius. The performance of the system can be enhanced by coating high total reflection film, increasing the processing and positioning precisions, and using highly collimating laser beam. (C) 2014 Wiley Periodicals, Inc. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4796265
 author
 Yan, Chunsheng ; Wang, Binhao and Somesfalean, Gabriel ^{LU}
 organization
 publishing date
 2014
 type
 Contribution to journal
 publication status
 published
 subject
 keywords
 multipass gas cell, gas sensor, cylindrical gas cell, elliptical, cylinder gas cell
 in
 Microwave and Optical Technology Letters
 volume
 56
 issue
 12
 pages
 3003  3009
 publisher
 John Wiley & Sons Inc.
 external identifiers

 wos:000342826100064
 scopus:84908374196
 ISSN
 08952477
 DOI
 10.1002/mop.28753
 language
 English
 LU publication?
 yes
 id
 a08a16a4f25d42c9b0cd3bbff67d68b9 (old id 4796265)
 date added to LUP
 20160401 12:54:42
 date last changed
 20210811 03:12:16
@article{a08a16a4f25d42c9b0cd3bbff67d68b9, abstract = {Two new types of multipass gas cells with circular and elliptical crosssections were developed. As for a cylindrical cell, the reflected rays in the circle would be an irregular trace without superposition and termination, if its central angle is a bit more than 2 pi/3 for an example. Each two adjacent reflected points have the same optical path difference and optical light passes through different optical distances before different reflection points. As for a cylindroidal cell, if the optical ray passes through one focus point of the ellipse, it must also pass through the other. The light will exit finally from the termination point of an axis. The optical distance depends on the eccentricity of the ellipse and the size of the emergent window. In this article, the detailed mathematical derivations of the optical multireflection traces for the two structures are presented. The unified formula is developed. It is found that these designs have small volumes and adjustable long optical paths. For example, the optical distances in the two structures are about 625 mm for a circle with 50 mm radius. The performance of the system can be enhanced by coating high total reflection film, increasing the processing and positioning precisions, and using highly collimating laser beam. (C) 2014 Wiley Periodicals, Inc.}, author = {Yan, Chunsheng and Wang, Binhao and Somesfalean, Gabriel}, issn = {08952477}, language = {eng}, number = {12}, pages = {30033009}, publisher = {John Wiley & Sons Inc.}, series = {Microwave and Optical Technology Letters}, title = {Design of new multipass gas cells with circular and elliptical crosssection}, url = {http://dx.doi.org/10.1002/mop.28753}, doi = {10.1002/mop.28753}, volume = {56}, year = {2014}, }