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Interferometeric imaging with a grating based phase control optical delay line

  • US 6,421,164 B2
  • Filed: 06/13/2001
  • Issued: 07/16/2002
  • Est. Priority Date: 04/29/1991
  • Status: Expired due to Fees
First Claim
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1. A method for producing an image of a sample, comprising:

  • providing an optical delay line apparatus, the optical delay line apparatus comprising;

    an optical input;

    an optical output; and

    a plurality of optical elements in optical communication with each other;

    guiding an optical signal having an optical spectrum from said optical input to said optical output by said plurality of optical elements, wherein at least one of said plurality of optical elements is a dispersive element and wherein at least one of said plurality of optical elements is adjustable;

    spatially dispersing the optical spectrum produced by the sample to provide a spatially dispersed optical signal; and

    , repetitively scanning at least one of a phase delay and a group delay of the spatially dispersed optical signal to produce an image.

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