Patent ID: 8994954
Filing Date: 2015-03-31
Classification: G01B,H01S

Abstract:
1. An optical coherence imaging method, comprising: providing a laser swept source to generate a swept optical signal; modulating a drive signal for a gain element as the swept optical signal is swept through a scan band by modulating a current to the gain element synchronously with and with the periodicity of a tunable element drive signal that is applied to a tunable element within a cavity of the laser swept source, which tunable element is used to control a wavelength of the swept optical signal, to control a mode-locked operation of the laser swept source; transmitting the swept optical signal to an interferometer having a reference arm and a sample arm, in which a sample is located; combining the swept optical signal returning from the sample arm and the reference arm to generate an interference signal; detecting the interference signal; and generating image information of the sample from the detected interference signal.