A MINIATURE INTERFEROMETRY SENSOR FOR MONITORING THE CHANGES OF FILM THICKNESS AND REFRACTIVE-INDEX
Publication in refereed journal


Full Text

Times Cited
Web of Science1WOS source URL (as at 07/08/2020) Click here for the latest count

Other information
AbstractA new miniature interferometer has recently been developed for monitoring the changes of film thickness and refractive index, wherein a semiconductor laser and a photodiode detector are integrated to form a laser/detector hybrid. The laser light is collimated by a lens. When the laser light hits a film, it is reflected twice by the two interfaces between the film and the surrounding mediums. The two reflected light beams are interfered at the detector by the same lens. Due to the interference, the detected intensity is a function of the film thickness. The swelling of thin gelatin gel film has been used to demonstrate the use of this novel sensor. The sensor is ready to be used, in many applications, such as inside a vacuum chamber, on a robot arm, and in a small reaction container, wherever a conventional interferometric setup cannot be easily implemented because of its size.
All Author(s) ListCHI W
Journal nameReview of Scientific Instruments
Year1994
Month4
Day1
Volume Number65
Issue Number4
PublisherAMER INST PHYSICS
Pages1021 - 1022
ISSN0034-6748
eISSN1089-7623
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesInstruments & Instrumentation; INSTRUMENTS & INSTRUMENTATION; Physics; Physics, Applied; PHYSICS, APPLIED

Last updated on 2020-08-08 at 02:33