公开(公告)号：US20240044797A1

公开(公告)日：2024-02-08

申请号：US18228989

申请日：2023-08-01

Applicant: Thorlabs, Inc.

Inventor： Sterling Backus ,  Scott Domingue ,  Matthew Kirchner

IPC: G01N21/64 ,  H01S3/00

CPC classification number: G01N21/6458 ,  H01S3/0057 ,  G01N2201/06113 ,  G01N2201/0696

Abstract: A system and method of producing energetic laser pulses suitable for multi-photon microscopy, in which laser pulses from an ultrafast pump source operating at greater than 40 MHz repetition rate are directed onto an optical cavity, where the pulses build-up to a higher energy inside of that cavity over the period of many pulses. After the intra-cavity pulses achieve sufficient energy, an active element inside of the cavity switches out the enhanced light pulse with a reduced a repetition rate relative to the pump source. The increased pulse energy and reduced repetition rate will enable the pump source, originally designed for two-photon microscopy, to perform new imaging modalities, such as deep, in-vivo, three-photon microscopy.