公开(公告)号：USRE50026E1

公开(公告)日：2024-06-25

申请号：US16741186

申请日：2020-01-13

Applicant: NKT Photonics A/S

Inventor： Paulo Almeida ,  John Redvers Clowes ,  Pascal Dupriez ,  Anatoly Borisovich Grudinin

IPC: H01S3/10 ,  H01S3/067 ,  H01S3/1112 ,  H01S3/13 ,  H01S3/00 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/23

CPC classification number: H01S3/06754 ,  H01S3/1112 ,  H01S3/0057 ,  H01S3/094003 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/2383 ,  H01S2301/08

Abstract: A method of tuning the time duration of laser output pulses, the method including spectrally dispersing optical pulses and further comprising providing an optical pulse having a time duration and a spectral bandwidth; spectrally dispersing (243, 245) the optical pulse so as to provide a selected change in the time duration of the pulse responsive to the spectral bandwidth of the pulse; outputting (226) an optical output pulse having a first time duration that is responsive to the selected change in time duration; providing another optical pulse; changing the amount of spectral bandwidth of the another optical pulse (272) to be different than that of the optical pulse or changing the amount of spectral dispersion so that spectrally dispersing the another optical pulse provides a change in time duration that is different than the selected change; and outputting (226) another optical output pulse having a second time duration that is responsive to the different change in time duration, the second time duration of the another optical output pulse being different than the first time duration of the optical output pulse.

公开(公告)号：US10826264B2

公开(公告)日：2020-11-03

申请号：US15431730

申请日：2017-02-13

Applicant: NKT Photonics A/S

Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Adam Devine

IPC: G02B6/02 ,  G02B6/26 ,  H01S3/00 ,  H01S3/23 ,  H01S3/067 ,  G02B27/10 ,  G02F1/365 ,  G02B6/28 ,  G02F1/35 ,  H01S3/16 ,  G02B6/028

Abstract: A supercontinuum optical pulse source provides a combined supercontinuum, and can comprise one or more seed pulse sources; first and second optical amplifiers arranged along first and second respective optical paths, wherein the first and second optical amplifiers are configured to amplify one or more optical signals generated by the one or more seed pulse sources; a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the first optical path; a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the second optical path; a supercontinuum-combining member to combine supercontinuum generated in at least the first and second microstructured light-guiding members to form a combined supercontinuum; wherein the supercontinuum-combining member comprises an output fibre, wherein the output fibre comprises a silica-based multimode optical fibre supporting a plurality of spatial modes at one or more wavelengths of the combined supercontinuum; wherein the supercontinuum-combining member has one or more input fibres which support no more than four spatial modes at any wavelength within the combined supercontinuum; and wherein the output fibre of the supercontinuum-combining member supports no more than four spatial modes at any wavelength within the combined supercontinuum.

公开(公告)号：US10074957B2

公开(公告)日：2018-09-11

申请号：US15431111

申请日：2017-02-13

Applicant: NKT Photonics A/S

Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Ian Michael Godfrey

IPC: H01S3/108 ,  H01S3/11 ,  G02B21/16 ,  G02F1/35 ,  H01S3/23 ,  H01S3/10 ,  H01S3/102 ,  G01N21/64 ,  G02F1/365

CPC classification number: H01S3/11 ,  G01N21/6458 ,  G01N2021/6419 ,  G01N2021/6441 ,  G01N2201/0697 ,  G02B21/16 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528 ,  H01S3/10 ,  H01S3/10046 ,  H01S3/1024 ,  H01S3/108 ,  H01S3/2308

Abstract: A method of providing optical supercontinuum pulses can comprise generating optical pump pulses with an optical pump laser, the optical pump pulses having a pump pulse repetition rate; launching optical pump pulses into a nonlinear optical element comprising an optical fiber; generating optical supercontinuum pulses from the optical pump pules via spectral broadening within the optical fiber; selectively providing a plurality of different repetition rates for the optical pump pulses so as to generate optical supercontinuum pulses having different repetition rates; and providing nominally identical spectral broadening of the optical supercontinuum pules having the different repetition rates.

公开(公告)号：US20240118585A1

公开(公告)日：2024-04-11

申请号：US18310239

申请日：2023-05-01

Applicant: NKT PHOTONICS A/S

Inventor： Anatoly Borisovich Grudinin ,  John Redvers Clowes ,  Pascal Dupriez ,  Michael Yarrow

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

CPC classification number: G02F1/3536 ,  G01N21/6458 ,  G01N21/65 ,  G02B21/0032 ,  G02B21/0076 ,  G02B21/0084 ,  G02F1/3532 ,  G02F1/395 ,  H01S3/0092 ,  H01S3/30 ,  G02F2202/32 ,  H01S3/005 ,  H01S3/067

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.

公开(公告)号：US11675245B2

公开(公告)日：2023-06-13

申请号：US17191401

申请日：2021-03-03

Applicant: NKT PHOTONICS A/S

Inventor： Anatoly Borisovich Grudinin ,  John Redvers Clowes ,  Pascal Dupriez ,  Michael Yarrow

IPC: G02F1/35 ,  G01N21/64 ,  G02B21/00 ,  H01S3/30 ,  G02F1/39 ,  G01N21/65 ,  H01S3/00 ,  H01S3/067 ,  H01S3/16

CPC classification number: G02F1/3536 ,  G01N21/6458 ,  G01N21/65 ,  G02B21/0032 ,  G02B21/0076 ,  G02B21/0084 ,  G02F1/3532 ,  G02F1/395 ,  H01S3/0092 ,  H01S3/30 ,  G01N2021/653 ,  G02F1/3507 ,  G02F1/3528 ,  G02F1/392 ,  G02F2202/32 ,  H01S3/005 ,  H01S3/067 ,  H01S3/06741 ,  H01S3/1618

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.

公开(公告)号：US20210333685A1

公开(公告)日：2021-10-28

申请号：US17191401

申请日：2021-03-03

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.

公开(公告)号：US11038316B2

公开(公告)日：2021-06-15

申请号：US15017605

申请日：2016-02-06

Applicant: NKT PHOTONICS A/S

Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Ian Michael Godfrey ,  Kestutis Vysniauskas

IPC: H01S3/11 ,  G02F1/383 ,  H01S3/00 ,  H01S3/067 ,  H01S3/109 ,  H01S3/23 ,  H01S3/16

Abstract: The invention can include an optical pulse source apparatus that includes the nonlinear generation of wavelengths, wherein the optical pulse source can comprise an oscillator for producing optical pulses, the optical pulses having a first wavelength; an optical fiber amplifier for amplifying optical pulses having the first wavelength; a nonlinear optical fiber receiving amplified optical pulses having the first wavelength to nonlinearly produce optical pulses that include wavelengths that are different than the first wavelength; and wherein the optical pulse source is configured so as to be operable to reduce the optical pulse frequency of the nonlinearly produced optical pulses.

公开(公告)号：USRE47818E1

公开(公告)日：2020-01-14

申请号：US15486547

申请日：2017-04-13

Applicant: NKT Photonics A/S

Inventor： Paulo Almeida ,  John Redvers Clowes ,  Pascal Dupriez ,  Anatoly Borisovich Grudinin

IPC: H01S3/10 ,  H01S3/13 ,  H01S3/11 ,  H01S3/067 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/23 ,  H01S3/00 ,  H01S3/16

Abstract: A method of tuning the time duration of laser output pulses, the method including spectrally dispersing optical pulses and further comprising providing an optical pulse having a time duration and a spectral bandwidth; spectrally dispersing (243, 245) the optical pulse so as to provide a selected change in the time duration of the pulse responsive to the spectral bandwidth of the pulse; outputting (226) an optical output pulse having a first time duration that is responsive to the selected change in time duration; providing another optical pulse; changing the amount of spectral bandwidth of the another optical pulse (272) to be different than that of the optical pulse or changing the amount of spectral dispersion so that spectrally dispersing the another optical pulse provides a change in time duration that is different than the selected change; and outputting (226) another optical output pulse having a second time duration that is responsive to the different change in time duration, the second time duration of the another optical output pulse being different than the first time duration of the optical output pulse.

公开(公告)号：US20170250518A1

公开(公告)日：2017-08-31

申请号：US15431111

申请日：2017-02-13

Applicant: NKT Photonics A/S

Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Ian Michael Godfrey

IPC: H01S3/13

CPC classification number: H01S3/11 ,  G01N21/6458 ,  G01N2021/6419 ,  G01N2021/6441 ,  G01N2201/0697 ,  G02B21/16 ,  G02F1/353 ,  G02F1/365 ,  G02F2001/3528 ,  H01S3/10 ,  H01S3/10046 ,  H01S3/1024 ,  H01S3/108 ,  H01S3/2308

Abstract: A method of providing optical supercontinuum pulses can comprise generating optical pump pulses with an optical pump laser, the optical pump pulses having a pump pulse repetition rate; launching optical pump pulses into a nonlinear optical element comprising an optical fiber; generating optical supercontinuum pulses from the optical pump pules via spectral broadening within the optical fiber; selectively providing a plurality of different repetition rates for the optical pump pulses so as to generate optical supercontinuum pulses having different repetition rates; and providing nominally identical spectral broadening of the optical supercontinuum pules having the different repetition rates.

公开(公告)号：US20170288362A1

公开(公告)日：2017-10-05

申请号：US15431730

申请日：2017-02-13

Applicant: NKT Photonics A/S

Inventor： John Redvers Clowes ,  Anatoly Borisovich Grudinin ,  Adam Devine

IPC: H01S3/067 ,  G02B6/26 ,  G02F1/365 ,  G02B27/10

Abstract: A supercontinuum optical pulse source provides a combined supercontinuum, and can comprise one or more seed pulse sources; first and second optical amplifiers arranged along first and second respective optical paths, wherein the first and second optical amplifiers are configured to amplify one or more optical signals generated by the one or more seed pulse sources; a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the first optical path; a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the second optical path; a supercontinuum-combining member to combine supercontinuum generated in at least the first and second microstructured light-guiding members to form a combined supercontinuum; wherein the supercontinuum-combining member comprises an output fibre, wherein the output fibre comprises a silica-based multimode optical fibre supporting a plurality of spatial modes at one or more wavelengths of the combined supercontinuum; wherein the supercontinuum-combining member has one or more input fibres which support no more than four spatial modes at any wavelength within the combined supercontinuum; and wherein the output fibre of the supercontinuum-combining member supports no more than four spatial modes at any wavelength within the combined supercontinuum.