公开(公告)号：US20200292914A1

公开(公告)日：2020-09-17

申请号：US16733739

申请日：2020-01-03

Applicant: NKT PHOTONICS A/S

Inventor： Anatoly Borisovich GRUDININ ,  John Redvers CLOWES ,  Pascal DUPRIEZ ,  Michael YARROW

IPC: G02F1/35 ,  G01N21/64 ,  G02B21/00 ,  G02F1/39 ,  G01N21/65 ,  H01S3/00 ,  H01S3/30

Abstract: A coherent anti-stokes Raman scattering apparatus for imaging a sample includes an optical output; an optical source arranged to generate a first optical signal at a first wavelength; and a nonlinear element arranged to receive the first optical signal, where the nonlinear element is arranged to cause the first optical signal to undergo four-wave mixing on transmission through the nonlinear element such that a second optical signal at a second wavelength and a third optical signal at a third wavelength are generated, wherein an optical signal pair including two of the first, second and third optical signals is provided to the optical output for imaging the sample.