Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2008-05-20
2008-05-20
Hughes, Deandra M (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
Reexamination Certificate
active
07375877
ABSTRACT:
A method and apparatus use a photonic-crystal fiber having a very large core while maintaining a single transverse mode. In some fiber lasers and amplifiers having large cores problems exist related to energy being generated at multiple-modes (i.e., polygamy), and of mode hopping (i.e., promiscuity) due to limited control of energy levels and fluctuations. The problems of multiple-modes and mode hopping result from the use of large-diameter waveguides, and are addressed by the invention. This is especially true in lasers using large amounts of energy (i.e., lasers in the one-megawatt or more range). By using multiple small waveguides in parallel, large amounts of energy can be passed through a laser, but with better control such that the aforementioned problems can be reduced. An additional advantage is that the polarization of the light can be maintained better than by using a single fiber core.
REFERENCES:
patent: 3728117 (1973-04-01), Heidenhain et al.
patent: 4313648 (1982-02-01), Yano et al.
patent: 4367040 (1983-01-01), Goto
patent: 4424435 (1984-01-01), Barnes, Jr.
patent: 4862257 (1989-08-01), Ulich
patent: 4895790 (1990-01-01), Swanson et al.
patent: 5319668 (1994-06-01), Luecke
patent: 5379310 (1995-01-01), Papen et al.
patent: 5440416 (1995-08-01), Cohen et al.
patent: 5526155 (1996-06-01), Knox et al.
patent: 5608826 (1997-03-01), Boord et al.
patent: 5802236 (1998-09-01), DiGiovanni et al.
patent: 5818630 (1998-10-01), Fermann et al.
patent: 5847863 (1998-12-01), Galvanauskas et al.
patent: 5907436 (1999-05-01), Perry et al.
patent: 5974060 (1999-10-01), Byren et al.
patent: 6014249 (2000-01-01), Fermann et al.
patent: 6023361 (2000-02-01), Ford
patent: 6028879 (2000-02-01), Ershov
patent: 6031952 (2000-02-01), Lee
patent: 6097863 (2000-08-01), Chowdhury
patent: 6192062 (2001-02-01), Sanchez-Rubio et al.
patent: 6208679 (2001-03-01), Sanchez-Rubio et al.
patent: 6212310 (2001-04-01), Waarts et al.
patent: 6226077 (2001-05-01), Dunne
patent: 6275623 (2001-08-01), Brophy et al.
patent: 6330523 (2001-12-01), Kacyra et al.
patent: 6339662 (2002-01-01), Koteles et al.
patent: 6381008 (2002-04-01), Branagh et al.
patent: 6381388 (2002-04-01), Epworth et al.
patent: 6496301 (2002-12-01), Koplow et al.
patent: 6625364 (2003-09-01), Johnson et al.
patent: 6665471 (2003-12-01), Farmer et al.
patent: 6717655 (2004-04-01), Cheng et al.
patent: 6754006 (2004-06-01), Barton et al.
patent: 6765724 (2004-07-01), Kramer
patent: 6798960 (2004-09-01), Hamada
patent: 6819871 (2004-11-01), Baldwin et al.
patent: 6822796 (2004-11-01), Takada et al.
patent: 6829421 (2004-12-01), Forbes et al.
patent: 6845204 (2005-01-01), Broeng et al.
patent: 6865344 (2005-03-01), Johnson et al.
patent: 6882431 (2005-04-01), Teich et al.
patent: 6901197 (2005-05-01), Hasegawa et al.
patent: 6914916 (2005-07-01), Pezeshki et al.
patent: 6917631 (2005-07-01), Richardson et al.
patent: 6937795 (2005-08-01), Squires et al.
patent: 6950692 (2005-09-01), Gelikonov et al.
patent: 6952510 (2005-10-01), Karlsen et al.
patent: 6958859 (2005-10-01), Hoose et al.
patent: 6960027 (2005-11-01), Krah et al.
patent: 6963354 (2005-11-01), Scheps
patent: 6996343 (2006-02-01), Neilson
patent: 7043127 (2006-05-01), Hasegawa
patent: 7072553 (2006-07-01), Johnson et al.
patent: 7106932 (2006-09-01), Birks et al.
patent: 7113327 (2006-09-01), Gu et al.
patent: 7116469 (2006-10-01), Bragheri et al.
patent: 7142757 (2006-11-01), Ward
patent: 7190705 (2007-03-01), Fermann et al.
patent: 7199924 (2007-04-01), Brown
patent: 7242835 (2007-07-01), Busse et al.
patent: 2002/0122644 (2002-09-01), Birks
patent: 2002/0181856 (2002-12-01), Sappey et al.
patent: 2003/0068150 (2003-04-01), Ariel et al.
patent: 2003/0165313 (2003-09-01), Broeng et al.
patent: 2003/0189758 (2003-10-01), Baer et al.
patent: 2004/0033043 (2004-02-01), Monro et al.
patent: 2004/0095968 (2004-05-01), Avizonis et al.
patent: 2004/0114849 (2004-06-01), Shah et al.
patent: 2004/0114852 (2004-06-01), Brown
patent: 2005/0041702 (2005-02-01), Fermann et al.
patent: 2005/0105866 (2005-05-01), Grudinin et al.
patent: 2005/0157998 (2005-07-01), Dong et al.
patent: 2005/0163426 (2005-07-01), Fermann et al.
patent: 2005/0169590 (2005-08-01), Alkeskjold
patent: 2005/0173817 (2005-08-01), Fauver et al.
patent: 2005/0226286 (2005-10-01), Liu et al.
patent: 2005/0259933 (2005-11-01), Temelkuran et al.
patent: 2005/0259934 (2005-11-01), Temelkuran et al.
patent: 2006/0067632 (2006-03-01), Broeng et al.
patent: 2006/0120418 (2006-06-01), Harter et al.
patent: 2006/0198246 (2006-09-01), Frederick et al.
patent: 2006/0204195 (2006-09-01), Kurosawa et al.
patent: 2006/0204795 (2006-09-01), Kurosawa et al.
patent: 2006/0227816 (2006-10-01), Liu
patent: 2006/0233554 (2006-10-01), Ramachandran et al.
patent: 2006/0263024 (2006-11-01), Dong et al.
patent: 2007/0127123 (2007-06-01), Brown et al.
www.crystal-fibre.com/datasheets/mm-37-01. 2005.
www.crystal-fibre.com/datasheets/mm-hna-5. Apr. 2005.
www.crystal-fibre.com/datasheets/mm-hna-35. Apr. 2005.
www.crystal-fibre.com/datasheets/mm-hna-110. Apr. 2005.
www.crystal-fibre.com/datasheets/mm-hna-200. Apr. 2005.
Champert, P. A., etal , “3.5 W frequency-doubled fiber-laser source at 772 nm”, “Applied Physics Letters”, Apr. 23, 2001, pp. 2420-2421, vol. 78, No. 17.
Limpert, J., etal , “High power Q-switched Yb-doped photonic crystal fiber laser producing sub-10 ns pulses”, “Appl. Phys. B 81”, pp. 19-21.
Tunnermann, A., etal , “The renaissance and bright future of fibre lasers”, “Journal of Physics B: Atomic, Molecular and Optical Physics”, 2005, pp. S681-S693, vol. 38.
“Sensor Systems for Biological Agent Attacks: Protecting Buildings and Military Bases”,Committee on Materials and Manufacturing Processes for Advanced Sensors, National Research Council National Academy Press, Washington D.C. web address: http://darwin.nap.edu/books/030909576X/html, (2005), 73.
Brooks, Christopher D., et al., “1-mJ energy, 1-MW peak-power, 10-W average power, spectrally narrow, diffraction-limited pulses from a photonic-crystal fiber amplifier”,Optics Expressvol. 13, No. 22, (Oct. 31, 2005), 8999-9002.
Davitt, Kristina, et al., “290 and 340 nm UV LED arrays for fluorescence detection from single airborne particles”,Optics Express, vol. 13, No. 23, 9548-9555.
Dunne, Mike, “Laser-driven particle accelerators”,Science, vol. 312, (Apr. 21, 2006), 374-376.
Henderson, Angus, et al., “Low threshold, singly-resonant CW OPO pumped by an all-fiber pump source”,Optics Expressvol. 14, No. 2, (Jan. 23, 2006), 767-772.
Limpert, J., et al., “High-power rod-type photonic crystal fiber laser”,Optics Expressvol. 13, No. 4, “Source date” estimated from other Limpert article uploaded, (Feb. 21, 2005), 1055-1058.
Limpert, J., et al., “Low-nonlinearity single-transverse-mode ytterbium-doped photonic crystal fiber amplifier”,Optics Expressvol. 12, No. 7, (Apr. 5, 2004).
Moutzouris, Konstantinos, et al., “Highly efficient second, third and fourth harmonic generation from a two-branch femtosecond erbium fiber source”,Optics Expressvol. 14, No. 5, (Mar. 6, 2006), 1905-1912.
Schreiber, T., et al., “Stress-induced single-polarization single-transverse mode photonic crystal fiber with low nonlinearity”,Optics Expressvol. 13, No. 19, (Sep. 19, 2005), 7621-7630.
Augst, S. J.., etal , “Wavelength beam combining of ytterbium fiber lasers”, “Opt. Lett.”, 2003, pp. 331-333, vol. 28.
Cooper, L. J.., etal , “High-power Yb-doped multicore ribbon fiber laser”, ovember 1, 2005, pp. 2906-2908, vol. 30, No. 21.
Fan, T. Y., “Laser Beam Combining for High-Power, High Radiance Sources”, “IEEE Journal of Selected Topics in Quantum Electronics”, 2005, pp. 567-577, vol. 11.
Hehl, Karl, etal, “High-efficiency dielectric reflection gratings: design, fabrication, and analysis”, “Appl. Opt.”,
Brooks Christopher D.
Di Teodoro Fabio
Aculight Corporation
Hughes Deandra M
Lemaire Charles A.
Lemaire Patent Law Firm, P.L.L.C.
LandOfFree
Method and apparatus for long-range lidar and active imaging... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for long-range lidar and active imaging..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for long-range lidar and active imaging... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2789145