Device for swept-source optical coherence domain reflectometry

  • US 8,690,330 B2
  • Filed: 12/21/2009
  • Issued: 04/08/2014
  • Est. Priority Date: 12/23/2008
  • Status: Active Grant
First Claim
Patent Images

1. A device for swept source optical coherence domain reflectometry (SS OCDR) on a movable sample, for the purpose of obtaining A-scans, comprising:

  • a tunable laser light source;

    at least one receiver for light backscattered from the sample, wherein the sample is illuminated on the sample surface with a measurement beam of diameter D;

    wherein the light source has a line width of δ

    k<

    168 m

    1
    ,wherein the A scan measuring range corresponds to a depth of the sample andfurther wherein the device is configured such that tuning of the light source is performed in τ

    <

    44 sec/(D*k0) about a centroid wave number k0.

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