Detection of methane in the air using a laser Raman spectrometer

2021 ◽  
Author(s):  
Matvey Kostenko ◽  
Dmitry V. Petrov ◽  
Maria Popova ◽  
Aleksandr S. Tanichev
Keyword(s):  
Raman Spectrometer ◽  
Laser Raman

Laser Raman Spectrometer for Process Control

1973 ◽  
Vol 12 (9) ◽  
pp. 2083 ◽  
Author(s):  
Arieh M. Karger ◽  
Richard P. English ◽  
Ray J. D. Smith
Keyword(s):  
Process Control ◽  
Raman Spectrometer ◽  
Laser Raman

A pulsed dye laser Raman spectrometer employing a new type of gated analogue detection

1981 ◽  
Vol 14 (12) ◽  
pp. 2189-2197 ◽  
Author(s):  
E Campani ◽  
G Gorini ◽  
G Masetti
Keyword(s):  
Dye Laser ◽  
Pulsed Dye Laser ◽  
Raman Spectrometer ◽  
Laser Raman ◽  
New Type

Adaptation of a Commercially Available Laser Raman Spectrometer for Underwater Chemical Sensing

2019 ◽  
Author(s):  
Jing-Heng Huang ◽  
Yen-Huang Liu ◽  
Kun-Sheng Lee ◽  
Shuo-Yen Tseng ◽  
Chyun-Cheng Wang ◽  
...  
Keyword(s):  
Chemical Sensing ◽  
Raman Spectrometer ◽  
Laser Raman

Slitless Optical-Fiber Laser-Raman Spectrometer Employing a Concave Holographic Grating

1977 ◽  
Vol 31 (4) ◽  
pp. 295-298 ◽  
Author(s):  
George E. Walrafen
Keyword(s):  
Optical Fiber ◽  
Fiber Laser ◽  
Numerical Aperture ◽  
Fused Silica ◽  
Holographic Grating ◽  
Photomultiplier Tube ◽  
Solid Core ◽  
Raman Spectrometer ◽  
Focal Line ◽  
Laser Raman

A slitless optical-fiber laser-Raman spectrometer has been developed that employs a single f/3 concave holographic diffraction grating. The exit end of an optical fiber is positioned at the grating focus, and the divergent excitation and Raman radiation are then dispersed and refocussed. Detection is accomplished by translating an exit slit and photomultiplier tube along the focal line. A moveable solid-core optical fiber that transmits light to a fixed photomultiplier tube may also be used. The holographic grating produces a straight focal line, instead of a curve, resulting in accurate focussing from 480 to 650 nm, with linear scanning. The low f-number grating was used to accommodate high numerical aperture optical fibers without loss of light. A comparison between the present spectrometer with a 55 m fused silica fiber and a Jarrell-Ash Czerny-Turner single monochromator using a 1-cm bulk sample indicates a signal/noise improvement by a factor of 137 for the very weak two-phonon band from fused silica near 1600 cm−1.

scholarly journals Laser-Raman Spectrometer

1971 ◽  
Vol 20 (1) ◽  
pp. 28-39 ◽  
Author(s):  
Tsunetake FUJIYAMA ◽  
Mitsuo TASUMI
Keyword(s):  
Raman Spectrometer ◽  
Laser Raman

scholarly journals A low cost laser-raman spectrometer

1998 ◽  
Vol 21 (5) ◽  
pp. 433-438 ◽  
Author(s):  
A K Bandyopadhyay ◽  
Nita Dilawar ◽  
Arun Vijayakumar ◽  
Deepak Varandani ◽  
Dharambir Singh
Keyword(s):  
Low Cost ◽  
Raman Spectrometer ◽  
Laser Raman

Development of a laser Raman spectrometer for deep-ocean science

2004 ◽  
Vol 51 (5) ◽  
pp. 739-753 ◽  
Author(s):  
Peter G Brewer ◽  
George Malby ◽  
Jill D Pasteris ◽  
Sheri N White ◽  
Edward T Peltzer ◽  
...  
Keyword(s):  
Deep Ocean ◽  
Raman Spectrometer ◽  
Laser Raman ◽  
Ocean Science
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