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Development of Infrared Sensors Using Energy Transfer/Energy Upconversion Processes: Study of Laser Excited Fluorescence in Rare Earth Ion Doped Crystals

By Nash-Stevenson, S. K.

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Book Id: WPLBN0004288170
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Reproduction Date: 1994-02-01

Title: Development of Infrared Sensors Using Energy Transfer/Energy Upconversion Processes: Study of Laser Excited Fluorescence in Rare Earth Ion Doped Crystals  
Author: Nash-Stevenson, S. K.
Volume:
Language: English
Subject: Schedules, Spacecraft Control, Telemetry
Collections: Government Library Collection
Historic
Publication Date:
1994
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P, V. (1994). Development of Infrared Sensors Using Energy Transfer/Energy Upconversion Processes: Study of Laser Excited Fluorescence in Rare Earth Ion Doped Crystals. Retrieved from http://community.worldlibrary.net/


Description
Description: A summary is presented of the spectroscopic study of three systems: LaF3:Ho(3), LaF3:Er(3) and CaF2:Nd(3). When the D levels of Ho(3) in LaF3 were resonantly excited with a laser beam of 640 nm, upconverted emissions were detected from J (416 nm), F (485 nm), and E (546 nm) levels. Energy upconverted emissions were also observed from F and E levels of Ho(3) when the material was excited with an 800 nm near infrared laser. When the D levels of Er(3) in LaF3 were resonantly excited with a laser beam of 637 nm, upconverted emissions were detected from the E (540 nm) and P (320, 400, and 468 nm) levels. Energy upconverted emissions were also observed from F, E, and D levels of Er(3) when the material was resonantly excited with an 804 nm near infrared laser. When the D levels of Nd(3) in CaF2 were resonantly excited with a laser beam of 577 nm, upconverted emissions were detected from the L (360 and 382 nm), K (418 nm), and I (432 nm) levels. Very weak upconverted emissions were detected when this system was irradiated with a near infrared laser. The numbers in parentheses are the wavelengths of the emissions.; CASI; Nasa Publication Center: Marshall Space Flight Center; Unclassified; No Copyright; Unlimited; Publicly available


 
 



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