Method for controlling fiber growth in a laser heated pedestal growth system by controlling a laser power output, a pedestal feedstock rate of motion, and a draw rate
Abstract
One or more embodiments relate to a method for controlling fiber growth and fiber diameter in a laser heated pedestal growth (LHPG) system so as to provide long, continuous single-crystal optical fibers of uniform diameter. The method generally provides three independent parameter feedback controls to control the molten zone height, laser power, and fiber drawing rates simultaneously in order to reduce the mismatch between instantaneous diameter changes and current diameter. The method permits the growth of fibers with non-uniform diameters along the fiber's length. The method also provides the capability to stop the LHPG system, remove the exhausted pedestal feedstock with a second pedestal feedstock, and restart the LHPG system to provide a continuous fiber.
- Inventors:
- Issue Date:
- Research Org.:
- US Dept. of Energy (USDOE), Washington, DC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1893004
- Patent Number(s):
- 11352712
- Application Number:
- 16/368,425
- Assignee:
- The United States of America as represented by the Secretary of the Air Force (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C30 - CRYSTAL GROWTH C30B - SINGLE-CRYSTAL-GROWTH
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 03/28/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Buric, Michael P., and Liu, Bo. Method for controlling fiber growth in a laser heated pedestal growth system by controlling a laser power output, a pedestal feedstock rate of motion, and a draw rate. United States: N. p., 2022.
Web.
Buric, Michael P., & Liu, Bo. Method for controlling fiber growth in a laser heated pedestal growth system by controlling a laser power output, a pedestal feedstock rate of motion, and a draw rate. United States.
Buric, Michael P., and Liu, Bo. Tue .
"Method for controlling fiber growth in a laser heated pedestal growth system by controlling a laser power output, a pedestal feedstock rate of motion, and a draw rate". United States. https://www.osti.gov/servlets/purl/1893004.
@article{osti_1893004,
title = {Method for controlling fiber growth in a laser heated pedestal growth system by controlling a laser power output, a pedestal feedstock rate of motion, and a draw rate},
author = {Buric, Michael P. and Liu, Bo},
abstractNote = {One or more embodiments relate to a method for controlling fiber growth and fiber diameter in a laser heated pedestal growth (LHPG) system so as to provide long, continuous single-crystal optical fibers of uniform diameter. The method generally provides three independent parameter feedback controls to control the molten zone height, laser power, and fiber drawing rates simultaneously in order to reduce the mismatch between instantaneous diameter changes and current diameter. The method permits the growth of fibers with non-uniform diameters along the fiber's length. The method also provides the capability to stop the LHPG system, remove the exhausted pedestal feedstock with a second pedestal feedstock, and restart the LHPG system to provide a continuous fiber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {6}
}
Works referenced in this record:
Novel implementation of laser heated pedestal growth for the rapid drawing of sapphire fibers
journal, December 1994
- Phomsakha, V.; Chang, R. S. F.; Djeu, N.
- Review of Scientific Instruments, Vol. 65, Issue 12
Seed crystals for pulling a single crystal and methods using the same
patent, August 1999
- Izumi, Teruo
- US Patent Document 5,932,002
Fabrication and optical properties of single-crystal YAG fiber optics
conference, February 2012
- Laustsen, Brian T.; Harrington, James A.
- SPIE Proceedings
Optical properties of single-crystal sapphire fibers
journal, January 1997
- Nubling, Rick K.; Harrington, James A.
- Applied Optics, Vol. 36, Issue 24
Optical properties and long-term stability of unclad single crystal sapphire fiber in harsh environments
conference, February 2019
- Liu, Bo; Buric, Michael; Wuenschell, Jeffrey
- Optical Components and Materials XVI
Method For Preparing Rod-shaped, Crystalline Semiconductor Bodies
patent, February 1957
- Schweickert, Hans
- US Patent Document 2783168
Low-loss propagation in Cr^4+:YAG double-clad crystal fiber fabricated by sapphire tube assisted CDLHPG technique
journal, August 2008
- Huang, K. Y.; Hsu, K. Y.; Jheng, D. Y.
- Optics Express, Vol. 16, Issue 16
Simulation and experiment on laser-heated pedestal growth of chromium-doped yttrium aluminum garnet single-crystal fiber
journal, March 2011
- Chang, Chun-Lin; Huang, Sheng-Lung; Lo, Chia-Yao
- Journal of Crystal Growth, Vol. 318, Issue 1
Growth and spectroscopic properties of Ti-doped sapphire single-crystal fibers
journal, September 2015
- Zhou, Dahua; Xia, Changtai; Guyot, Yannick
- Optical Materials, Vol. 47
Apparatuses and Methods for Producing thin Crystals Fibers Using Laser Heating Pedestal Growth
patent-application, February 2018
- Maxwell, Gisele; Ponting, Bennett
- US Patent Application 15/554703; 20180051389 A1
Single-crystal fiber optics: a review
conference, February 2014
- Harrington, James A.
- SPIE Proceedings
Modified single crystal fibers for distributed sensing applications
conference, April 2017
- Buric, M.; Liu, B.; Huang, S.
- SPIE Commercial + Scientific Sensing and Imaging, SPIE Proceedings
Advances in Single-Crystal Fibers and Thin Rods Grown by Laser Heated Pedestal Growth
journal, January 2017
- Maxwell, Gisele; Ponting, Bennett; Gebremichael, Eminet
- Crystals, Vol. 7, Issue 1
Highly efficient waveguided laser performance of diode pumped unclad Yb:YAG crystalline fibre
journal, May 2016
- Zhang, J.; Chen, Y.; Ponting, B.
- Laser Physics Letters, Vol. 13, Issue 7
Growing crystalline sapphire fibers by laser heated pedestal techiques
patent, March 1997
- Phomsakha, Vongvilay; Chang, Rong-Feng; Djeu, Nicholas
- US Patent Document 5,607,506
Control of the power to the heater and the speed of movement of a crystal rod by control of the crystal rod diameter
patent, October 1989
- Watanabe, Masataka; Ohhara, Nobuhiro; Taguchi, Kenichi
- US Patent Document 4,876,438
Single-crystal fiber structures for harsh environment applications (Rising Researcher Presentation)
conference, May 2018
- Buric, Michael P.; Liu, Bo; Ohodnicki, Paul R.
- Fiber Optic Sensors and Applications XV
Automatic diameter control system applied to the laser heated pedestal growth technique
journal, January 2003
- Andreeta, M. R. B.; Caraschi, L. C.; Hernandes, A. C.
- Materials Research, Vol. 6, Issue 1
Improved laser-heated pedestal growth system for crystal growth in medium and high isostatic pressure environment
journal, December 1999
- Reyes Ardila, D.; Andreeta, J. P.; Ribeiro, C. T. M.
- Review of Scientific Instruments, Vol. 70, Issue 12
Device and method for the determination of diameters of crystals
patent-application, November 2001
- Altekruger, Burkhard; Aufreiter, Joachim; Bruss, Dieter
- US Patent Application 09/141322; 20010043733
Laser heated pedestal growth system commissioning and fiber processing
conference, May 2016
- Buric, Michael; Yip, M. J.; Chorpening, Ben
- SPIE Proceedings
Laser‐heated miniature pedestal growth apparatus for single‐crystal optical fibers
journal, November 1984
- Fejer, M. M.; Nightingale, J. L.; Magel, G. A.
- Review of Scientific Instruments, Vol. 55, Issue 11