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Title: Fibre laser based on tellurium-doped active fibre

We have studied the lasing properties of tellurium-doped germanosilicate fibre, identified its gain and excited-state absorption bands, and assessed the effect of cooling to low temperature (77 K) on the bands. The excitation spectrum of the near-IR luminescence in the fibre has been measured. Lasing at 1.55 mm has been demonstrated for the first time in this gain medium at liquidnitrogen temperature and pump wavelengths of 1.064 and 1.085 mm. The measured Raman spectrum of the fibre provides some insight into the structure of the near-IR luminescence centre. (letters)
Authors:
; ; ; ;  [1] ; ;  [2]
  1. Fiber Optics Research Center, Russian Academy of Sciences, Moscow (Russian Federation)
  2. G.G.Devyatykh Institute of Chemistry of High-Purity Substances, Russian Academy of Sciences, Nizhnii Novgorod (Russian Federation)
Publication Date:
OSTI Identifier:
22373594
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 44; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; COOLING; DOPED MATERIALS; EXCITED STATES; FIBERS; LASERS; LUMINESCENCE; NEAR INFRARED RADIATION; PUMPING; RAMAN SPECTRA; TELLURIUM; TEMPERATURE RANGE 0065-0273 K