| 摘要 |
This invention relates to a measurement device (6), for optically measurement a property of a measurement object (12; 15; 18), the measurement device comprising a main resonator (11) having a first and a second reflecting end (1, 2) defining a cavity (7) having an effective optical cavity length, an optical gain element (3) for generating light travelling along an optical beam path between the first and second reflecting ends (1, 2), and a dispersive focusing resonator element (5) which is positioned along the optical beam path between the optical gain element (3) and the second reflecting end (2), whereby the measurement object is arranged to be at least partly positioned within the optical beam path of the main resonator, and whereby the measurement device further comprises a detection means (8) for detecting a characteristic of light emitted from the main resonator, the valve of the detected characteristic being a measure of a property of the measurement object. ® KIPO & WIPO 2007
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