| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for providing high-speed wavelength tuning.SOLUTION: A light source configuration and method involve an arrangement configured to emit an electromagnetic radiation having (i) a spectrum whose mean frequency changes at an absolute rate that is greater than about 6000 (or 2000) terahertz per millisecond, (ii) a mean frequency that changes over a range greater than about 10 terahertz, and/or (iii) an instantaneous line width less than about 15 gigahertz. According to another embodiment, an arrangement is provided configured to, periodically and as a function of time, select at least one first electromagnetic radiation on the basis of a mean frequency of the at least one first electromagnetic radiation. The mean frequency can vary linearly over time, where the apparatus can emit a second electromagnetic radiation having a spectrum whose mean frequency changes periodically as a function of time with a second characteristic period. A first characteristic period can be greater than the second characteristic period. |
