Coherent light generators – Particular temperature control
Reexamination Certificate
2008-04-01
2008-04-01
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular temperature control
C372S036000
Reexamination Certificate
active
11120303
ABSTRACT:
A solid state laser medium comprising at least one cooling element, i.e. cooling element, in contact with and alternating in series with at least one gain element. At least one cooling element and at least one gain element are joined at an interface having a center point, wherein the interface is physically modified at the interface such that the heat transfer coefficient at the interface decreases radially from the center point of the interface. The modified interface promotes thermal transfer from the gain element in the axial direction, in such a manner as to reduce thermal distortion affecting optical properties of the laser. Concentric radially disposed barriers to heat flow that hinder heat flow in the radial direction may be added within the gain element to further reduce thermal distortion within the laser medium.
REFERENCES:
patent: 3670257 (1972-06-01), McMahan
patent: 3679999 (1972-07-01), Chernoch
patent: 3872401 (1975-03-01), Cooley
patent: 3895313 (1975-07-01), Seitz
patent: 4899347 (1990-02-01), Kuchar et al.
patent: 5299214 (1994-03-01), Nakamura et al.
patent: 5325384 (1994-06-01), Herb et al.
patent: 5386427 (1995-01-01), Zayhowski
patent: 5781573 (1998-07-01), Basu
patent: 5796766 (1998-08-01), Hargis et al.
patent: 5985684 (1999-11-01), Marshall et al.
patent: 6101201 (2000-08-01), Hargis et al.
patent: 6188706 (2001-02-01), Robertson
patent: 6385220 (2002-05-01), Miller et al.
patent: 6396864 (2002-05-01), O'Brien et al.
patent: 6480514 (2002-11-01), Lorenzen et al.
patent: 6643305 (2003-11-01), Bewley et al.
patent: 6667999 (2003-12-01), Hasson et al.
patent: 2003/0063638 (2003-04-01), Hasson et al.
Fork et al, Integrated Diamond Sapphire Laser, Oct. 6, 2003, Optics Express, vol. 11, No. 20, 2532-2548.
Richard L. Fork et al., Integrated diamond sapphire laser, Oct. 6, 2003, pp. 2532-2548, vol. 11, No. 20, Optics Express, US.
http://www.uah.edu/News/2003news/wafers.html, Oct. 27, 2003, 2 pages.
Andrew S. Keys et al., Full cycle, low loss, low distortion phase modulation from multilayered dielectric stacks with terahertz optical bandwidth, Oct. 23, 2000, pp. 311-322, vol. 7, No. 9, Optics Express, US.
Matthew H. Smith et al. , Safe Delivery of optical power from space, May 7, 2001, pp. 537-546, vol. 8, No. 10. Optics Express, US.
A. C. Defranzo and B. G. Pazol, Index of refraction measurement on sapphire at low temperatures and visible wavelengths, May 1, 1993, pp. 2224-2234, vol. 32, No. 13, Applied Optics, US.
Tso Yee Fan and John L. Daneu, Thermal Coefficients of the optical path length and refractive index in YAG, Mar. 20, 1998, pp. 1635-1637, vol. 37, No. 9, Applied Optics, US.
Di Yang et al., Infraref refractive index measurements using a new method, 2000, pp. 42-52, Optical Diagnostic Methods for Inorganic Materials II, Proceedings of SPIE vol. 4103.
T. Ruff, et al., Temperature dependence of the refractive index of diamond up to 925 K, Dec. 15, 2000, 4 pgs., vol. 62, No. 24, Physical Review B, The American Physical Society, US.
Toshimaro Sato, et al., Thermal expansion of a high purity synthetic diamond single crystal at low temperatures, Physical Review B, vol. 65, 4 pgs., 2002 The American Physical Society.
R. L. Fork, et al, Negative dispersion using pairs of prisms, May 1984, pp. 150-152; vol. 9, Optical Society of America, US.
R. L. Fork, et al., Compression of optical pulses to six femtoseconds by using cubic phase compension, Jul. 1987, 3 pgs., Optical Society of America.
Robert E. Hankey, et al., Third-Order Elastic constans of A12O3, 1970, pp. 190-201, vol. 48 No. 1 (Part 2), The Journal of the Acoustical Society of America.
M. H. Grimsditch, et al., Brillouin scattering in diamond, Apr. 15, 1975, Physical Review B, vol. 11, No. 8, pp. 3139-3148.
J. D. Foster, et al. Thermal Effects in a Nd:YAG Laser, Aug. 1970, vol. 41, No. 9, Journal of Applied Physics.
M. H. Grimsditch, et al., Piezobirefringence in diamond, Mar. 15, 1979, vol. 19, No. 6, Physical Review B.
R. W. Dixon, Photoelastic Properties of Selected Materials and their Relevance for Applications to Acoustic Light Modulators and Scanners, Dec. 1967, vol. 38, No. 13, Journal of Applied Physics, pp. 5149-5153.
F. Benabid, et al., Birefringence measurements of sapphire test masses for laser interferometer gravitational wave detector, Jan. 19, 1998, Physcis Letters A 237 (1998) 337-342.
S. I. Novikova, Thermal Expansion of Diamonds Between 25 and 750°K, pp. 1464-1465.
Rosalind Wynne et al., Thermal Coefficients of the expansion and refractive index in YAG, May 20, 1999, pp. 3282-3284, vol. 38, No. 15, Applied Optics.
T. Numazawa, et al., Thermal conductivity measurements for valuation of crystal perfection at low temperatures, pp. 2089-2094, UK.
David C. Brown, Ultrahigh-Average-Power Diode-Pumped Nd:YAG and Yb:YAG Lasers, May 1997, IEEE Journal of Quantum Electronics, vol. 33, No. 5, pp. 861-873.
Y. S. Touloukian et al, Thermal Expansion of Nonmetallic Solids, Thermophysical properties of Matter 13, 2 pgs.
Colin T. Taylor et al., Measurement of the thermal Expansion Coefficient of an All-Sapphire Optical Cavity, Apr. 1997, IEEE Transaction on Instrumentation and Measurement, pp. 183-185.
Alexander Zaitsev, Chapter 7 Handbook of Industrial Diamonds and Diamond Films, Optical Properties, pp. 231.
Fork Richard L.
Laycock Rustin
Alston & Bird LLP
Fork Richard L.
Rodriguez Armando
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