Optical: systems and elements – Optical frequency converter
Patent
1997-01-23
1999-02-23
Lee, John D.
Optical: systems and elements
Optical frequency converter
20415715, 204164, 361225, 385122, G02F 135
Patent
active
058750533
ABSTRACT:
Several embodiments are described for induced electric field or E-field poling of QPM nonlinear crystal materials, such as LiNbO.sub.3, LiTaO.sub.3 and KTP, utilizing approaches which, for the most part, avoid the necessity of depositing or otherwise forming a series of spatially disposed conductive electrodes on one surface of the nonlinear crystal material. E-field poling is accomplished by applying a high voltage electric field in excess, for example, in the range of several kilovolts per cm to several 100 kilovolts per centimeter, at room temperature to provide inverted domains in a pattern of continuously alternating domains corresponding to the regions formed on the first z surface of the crystal. The employment of single, planar-applied liquid electrodes is preferred eliminating any necessity of forming and removing previously formed metal electrodes in the poling process.
REFERENCES:
patent: 3407309 (1968-10-01), Miller
patent: 5036220 (1991-07-01), Byer et al.
patent: 5193023 (1993-03-01), Yamada et al.
patent: 5382334 (1995-01-01), Miyaguchi et al.
patent: 5519802 (1996-05-01), Field et al.
patent: 5615041 (1997-03-01), Field et al.
patent: 5644422 (1997-07-01), Bortz et al.
patent: 5734772 (1998-03-01), Gopalan et al.
patent: 5756263 (1998-05-01), Gupta et al.
W.K. Burns et al, entitled "Second Harmonic Generation in Field Poled, Quasi-Phase-Matched, Bulk LiNbo.sub.3 " IEEE Photonics Technology Letters, Feb. 1994, vol.6(2), pp. 252-254.
Jonas Webjo rn et al., entitled "Quasi-Phase-Matched Blue Light Generation in Bulk Lithium Niobate, Electrically Poled via Periodic Liquid Electrodes", Elec. Lett., vol. 30(11), pp. 894-895, May 1994.
J. Webjorn et al. entitled "Electric-field-Induced Periodic Domain INversion in Nd.sub.3 --Diffused LiNbo.sub.3 " Electronics Letters, Dec. 8, 1994, vol. 30 (25), pp. 2135-2136.
Feisst et al. entitled "Current Induced Periodic Ferroelectric Domain Structures in LiNbO.sub.3 Applied for Efficient Nonlinear Optical Frequency Micing" Appl. Phys. Lett 47(11) Dec. 1985, pp. 1125-1127.
Feng et al. entitled "Enhancement of Second-Harmonic Generation in LiNbO.sub.3 Crystals with Periodic Laminar Ferroelectric Domains" Appl. Phys. Lett., vol. 37(1), pp. 607-609, Oct. 1980.
Ito et al. entitled "Fabrication of Periodic Domain Grating in LiNbO.sub.3 by Electron Beam Writing for Application of Nonlinear Optical Processes" E;ectronic Lett., Jul. 4, 1991, vol. 27(14) pp. 1221-1222.
Kewitsch et al. entitld "Turnable quasi-Phase Matching Using Dynamic Ferroelectric Domain Grating Induced by Photorefractive Space-Charge Fields" Appl. Phys. Lett., vol. 64(23), Jun. 6, 1994, pp. 3068-3070.
Nazarathy et al. entitled "Spread-Spectrum Nonlinear-Optical Interactions: Quasi-Phase Matching with Pseudorandom Polarity Revrsals" Optics Letters, Oct. 1987, vol. 12(10), pp. 823-825.
Mizuuchi et al entitled "Harmonic Blue Light Generation in Bulk Periodically Poled LiTaO.sub.3 " Appl. Phys. Lett., May 29, 1.995, vol. 66 (22), pp. 2943-2945.
Ka-Kha Wong entitled "Integrated Optical Waveguides and Devices Fabricated by Proton Exchange: A Review", SPIE-Proceddings of Integrated Optical Circuit Engineering VI (No month 1988), vol. 993, pp. 13-25.
Nam Derek
Scifres Donald R.
Waarts Robert G.
Webjorn Jonas
Carothers, Jr. W. Douglass
Lee John D.
SDL Inc.
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