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Optical system including etalon for optically processing electromagnetic radiation at a repetition rate greater than about 1. 25amp;times;10.sup.4 Hz
Optical system including etalon for optically processing electromagnetic radiation at a repetition rate greater than about 1. 25amp;times;10.sup.4 Hz
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机译：包括标准具的光学系统，用于以大于约1的重复速率对电磁辐射进行光学处理。25×10 4赫兹
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摘要
An optical system is disclosed which includes at least a first source of electromagnetic radiation (signal beam radiation), a device for processing the signal beam radiation, and a detector for detecting the processed signal beam radiation. The processing device functions, for example, as an amplitude modulator, a demultiplexer, or a switch, and includes a material region exhibiting a nonlinear optical response at one or more resonant wavelengths of electromagnetic radiation, as well as at least a second source of electromagnetic radiation (control beam radiation) for selectively inducing the nonlinear optical response. Significantly, the wavelength, duration and intensity of the control beam radiation are chosen to induce a resonant, nonlinear optical response, essentially free of any relatively slow component, in said material region at repetition rates higher than about 1.25×10.sup.4 Hz, or higher than about 3.3×10.sup.10 Hz, or even as high, or higher, than about 2.5×10.sup.11 Hz.
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