Optical coherent tomography with electrically tunable semiconductor laser using FMCW techniques

Imaging of highly scattering objects in scattering media can play an important part in assessing melanoma in human skin. The technique to be presented is based on frequency modulated continuous waves using a coherent tunable semiconductor laser irradiating a Michelson interferometer. The electrically tunable laser is characterized and the procedure to linearize the instantaneous frequency with time is described. The temporal point spread function of dilute milk is measured. Finally the performance of our imaging system is demonstrated on 2D-images of solid scattering phantoms and of an eye of a pig.

[1]  R. Alfano,et al.  Time-resolved Fourier spectrum and imaging in highly scattering media. , 1993, Applied optics.

[2]  E. Brinkmeyer,et al.  Coherent frequency-domain reflectometry for characterization of single-mode integrated-optical waveguides , 1993 .

[3]  Minoru Maeda,et al.  Fabrication and characteristics of GaAs-AlGaAs tunable laser diodes with DBR and phase-control sections integrated by compositional disordering of a quantum well , 1991 .

[4]  Vladimir Blazek,et al.  Investigation of highly scattering media using near-infrared continuous wave tunable semiconductor laser , 1995, Photonics West.

[5]  D A Benaron,et al.  Optical time-of-flight and absorbance imaging of biologic media. , 1993, Science.

[6]  R. Ulrich,et al.  Optical frequency domain reflectometry in single‐mode fiber , 1981 .

[7]  Simon R. Arridge,et al.  Near-infrared imaging: photon measurement density functions , 1995, Photonics West.

[8]  Britton Chance,et al.  Phase and intensity information in a highly-scattering medium with two absorbers using phased-array spectroscopy: theoretical study , 1994, Other Conferences.

[9]  W. Zinth,et al.  Time-gated transillumination of biological tissues and tissuelike phantoms. , 1994, Applied optics.

[10]  K.,et al.  Frequency-domain optical mammography: edge effect corrections. , 1996, Medical physics.

[11]  Vladimir Blazek,et al.  Light-distribution from ultrashort laser pulses in tissue: a simulation study , 1994, Other Conferences.

[12]  Ikuo Mito,et al.  Single frequency and tunable laser diodes , 1988 .

[13]  Markus-Christian Amann.  Phase noise limited resolution of coherent LIDAR using widely tunable laser diodes , 1992 .

[14]  D. Delpy,et al.  A design for a stable and reproducible phantom for use in near infra-red imaging and spectroscopy , 1993 .

[15]  S. Jacques,et al.  Optical reflectance and transmittance of tissues: principles and applications , 1990 .

[16]  N. Gisin,et al.  High-sensitivity-coherent optical frequency-domain reflectometry for characterization of fiber-optic network components , 1995, IEEE Photonics Technology Letters.

[17]  Petar M. Djuric,et al.  Parameter estimation of chirp signals , 1990, IEEE Trans. Acoust. Speech Signal Process..