Invention Grant
- Patent Title: Nanoparticle doping for lasers and amplifiers operating at eye-safer wavelengths, and/or exhibiting reduced Stimulated Brillouin Scattering
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Application No.: US15783836Application Date: 2017-10-13
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Publication No.: US11043785B2Publication Date: 2021-06-22
- Inventor: Colin C. Baker , Edward J. Friebele , Woohong Kim , L. Brandon Shaw , Jasbinder S. Sanghera
- Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
- Applicant Address: US VA Arlington
- Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
- Current Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
- Current Assignee Address: US VA Arlington
- Agency: US Naval Research Laboratory
- Agent Sean M. Walsh
- Main IPC: H01S3/067
- IPC: H01S3/067 ; C03C13/04 ; C03C14/00 ; H01S3/16 ; H01S3/17 ; B82Y20/00 ; B82Y30/00

Abstract:
Methods for synthesizing fibers having nanoparticles therein are provided, as well as preforms and fibers incorporating nanoparticles. The nanoparticles may include one or more rare earth ions selected based on fluorescence at eye-safer wavelengths, surrounded by a low-phonon energy host. Nanoparticles that are not doped with rare earth ions may also be included as a co-dopant to help increase solubility of nanoparticles doped with rare earth ions in the silica matrix. The nanoparticles may be incorporated into a preform, which is then drawn to form fiber. The fibers may beneficially be incorporated into lasers and amplifiers that operate at eye safer wavelengths. Lasers and amplifiers incorporating the fibers may also beneficially exhibit reduced Stimulated Brillouin Scattering.
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