ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
We report experimental results obtained in our laboratories in the development of Er3+-doped glass microspherical cavities for the fabrication of compact and low threshold laser sourcesat 1.55 μm. We investigate three different approaches in order to fabricate the microspheresincluding direct melting of Er3+-doped glass powders, coating of silica microspheres with an Er3+-doped sol-gel layer, and synthesis of Er3+-doped monolithic microspheres using the sol-gel route inacid catalysis. Details of the different fabrication processes are presented together with thephotoluminescence characterization in free space configuration of the microspheres and of the glassprecursor. We analyse the photoluminescence spectra of the whispering gallery modes of themicrospheres exited using evanescent coupling and we demonstrate laser action in a wide range ofwavelengths around 1.55 μm
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.55.46.pdf
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