We propose and demonstrate a method of real-time dispersion compensation suitable for scanning interferometry and optical coherence tomography. Static grating tilt in a scanning frequency-domain optical delay line is shown to produce dispersion that is linearly proportional to scan position, and we use this property to achieve depth-dependent dispersion compensation during an interferometric scan through a dispersive sample.
© 2002 Optical Society of America
(110.4500) Imaging systems : Optical coherence tomography
(120.1840) Instrumentation, measurement, and metrology : Densitometers, reflectometers
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(260.2030) Physical optics : Dispersion
(320.5540) Ultrafast optics : Pulse shaping
Elwyn D. J. Smith, Andrei V. Zvyagin, and David D. Sampson, "Real-time dispersion compensation in scanning interferometry," Opt. Lett. 27, 1998-2000 (2002)