Optical element
Patent 5898720 Issued on April 27, 1999. Estimated Expiration Date: 
August 8, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 8, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3729690 Means for producing and amplifying optical energy Means for producing and amplifying optical energy Apparatus and method for making and using high index of refraction materials Optical functioning glass and method of manufacturing same, optical fiber, waveguide device, and laser device Patent #: 5337401 InventorsApplicationNo. 694246 filed on 08/08/1996US Classes:372/39, PARTICULAR ACTIVE MEDIA359/244Opto-optical deviceExaminersPrimary: Dang, Hung XuanAssistant: Bey, Dawn-Marie Attorney, Agent or FirmInternational ClassH01S 003/14Foreign Application Priority Data1995-08-09 JPAbstractAn optical element and a method capable of electromagnetically inducing transparency in a solid. The optical element includes a solid having a number N of sites characterized by at least three energy levels including a first level higher than a second and a third lower than the second, and an excitation device configured to irradiate the solid with a first light having a wavelength corresponding to the energy difference between the first and the second level, and a second light having a wavelength corresponding to the energy difference between the first and the third level. The solid satisfies ς23 ࣘς12 and ς23 ࣘς13 where ς12, ς13 and ς23 are respectively the standard deviations of the energy differences between the first and second level, between the first and third level, and between the second and third level.Other References
Field of SearchOpto-optical deviceInsulating crystal PARTICULAR COMPONENT CIRCUITRY Having fault protection circuitry Having noise suppression circuitry Having feedback circuitry Optical pumping Power supply PARTICULAR ACTIVE MEDIA Amorphous (e.g., glass) Electrode Liquid coolant Utilizing color centers Controlling current or voltage to laser Switch (e.g., thyratron, etc.) HAVING AN APPLIED MAGNETIC FIELD Heat sink For driving or controlling laser | |
