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CATEGORIES:Horizon: A Sensory World. Novel Sensor Technologie
 s and Applications
SUMMARY:Laser based reactive flow sensing - Dr Johan Hult\
 , Department of Chemical Engineering
DTSTART;TZID=Europe/London:20070320T115500
DTEND;TZID=Europe/London:20070320T122000
UID:TALK6801AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/6801
DESCRIPTION:Recent developments in the application of novel li
 ght sources to reactive flow sensing will be prese
 nted. Laser based sensors can be used for in-situ 
 probing of hostile environments\, such as the high
  temperature reactive gases found inside a jet fla
 me. Ideally\, such a sensor combines a wide spectr
 al coverage with a high wavelength tuning rate\, t
 hus allowing simultaneous monitoring of multiple s
 pecies at rates matching the turbulent flow scales
 . A newly developed supercontinuum sensor offers s
 uch capabilities\, as it is capable of sweeping ov
 er a several hundred nanometre wide wavelength ran
 ge at MHz rates. For certain applications it is fu
 rthermore necessary to resolve the spatial scales 
 of the flow\, which requires the use of fluorescen
 ce based techniques. This has traditionally requir
 ed pulsed high-power lasers\, but we have recently
  demonstrated that compact GaN diode lasers can eq
 ually well be employed for such measurements.
LOCATION:Kaetsu Centre\, New Hall
CONTACT:Liam Garvey
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