公开(公告)号：US20230400677A1

公开(公告)日：2023-12-14

申请号：US18327088

申请日：2023-06-01

Applicant: LEICA MICROSYSTEMS CMS GMBH

Inventor： Manuel KREMER

IPC: G02B21/16 ,  G02F1/39 ,  G02F1/35 ,  G02F1/355

CPC classification number: G02B21/16 ,  G02F1/392 ,  G02F1/353 ,  G02F1/3551 ,  G02F1/3503 ,  G02F1/3528 ,  G02F2203/055

Abstract: A light source unit for an imaging device includes a beam extraction unit configured to receive broadband laser light, to direct at least a part of the broadband laser light having a first wavelength into an amplifier beam path, and to direct a residual laser light into a first illumination beam path. The light source unit further includes an optical amplifier unit arranged in the amplifier beam path and configured to generate amplified laser light having the first wavelength by amplifying the part of the broadband laser light, and a frequency changing unit arranged in the amplifier beam path and configured to generate laser light having a second wavelength from the amplified laser light having the first wavelength.

公开(公告)号：US20190339500A1

公开(公告)日：2019-11-07

申请号：US16305902

申请日：2017-05-31

Applicant: LEICA MICROSYSTEMS CMS GMBH

Inventor： Bernd WIDZGOWSKI ,  Vishnu Vardhan KRISHNAMACHARI ,  Lars FRIEDRICH ,  Manuel KREMER ,  Arnold GISKE

IPC: G02B21/00

Abstract: An optical arrangement has an optical beam path for illuminating a sample space with a sequence of laser light pulses generated in a laser cycle, the optical arrangement. At least one laser light source is configured to generate the sequence of laser light pulses along the optical beam path. A wavelength-selective pulse picker is situated in the optical beam path and has, in a predefined illumination clock timing synchronizable with the laser light pulses, an open state in which the pulse picker is light-transparent to at least one laser light pulse towards the sample space. The open state has at least two different transmission states which differ with regard to their respective transmission spectrums, and wherein the two transmission states are switchable on and/or off independently of one another.

公开(公告)号：US20160290928A1

公开(公告)日：2016-10-06

申请号：US15037451

申请日：2014-11-19

Applicant: LEICA MICROSYSTEMS CMS GMBH

Inventor： Vishnu Vardhan KRISHNAMACHARI ,  Volker SEYFRIED ,  William C. HAY ,  Manuel KREMER

IPC: G01N21/65

CPC classification number: G01N21/65 ,  G01N2021/653 ,  G01N2201/06113 ,  G02B21/0032 ,  G02B21/0076 ,  G02B21/16

Abstract: A device (10) for illuminating a sample (40) is described, having: at least one pulsed laser light source (12) for repeated emission of a first laser pulse along a first light path (14) and of a second laser pulse along a second light path (16) physically separated from the first light path; a superimposition element (32) for collinear superimposition of the two laser pulses in a shared light path (34); a delay stage (26) arranged in the first or the second light path (14, 16), for delaying one of the two laser pulses relative to the other laser pulse in such a way that the two laser pulses sent along the shared light path (34) onto the sample (40) exhibit a temporal superimposition; a shared chirp unit (36) arranged in the shared light path (34), for frequency-modifying influencing both of the first laser pulse and of the second laser pulse; and at least one separate chirp unit (18) arranged in the first light path (14), for frequency-modifying influencing only of the first laser pulse. The shared chirp unit (36) and the separate chirp unit (18) are coordinated with one another in order to achieve a target state. The separate chirp unit (18) is coupled to a control system (20) by which the separate chirp unit (18) is controllable with a control parameter dependent on the wavelength of the first laser pulse in order to establish the target state.

Abstract translation: 描述了用于照亮样品（40）的装置（10），其具有：用于沿着第一光路（14）重复发射第一激光脉冲和沿着第二激光脉冲重复发射第一激光脉冲的至少一个脉冲激光光源（12） 与第一光路物理分离的第二光路（16）; 用于共享光路（34）中的两个激光脉冲的共线叠加的叠加元件（32）; 布置在第一或第二光路（14,16）中的延迟级（26），用于相对于另一激光脉冲延迟两个激光脉冲中的一个，使得两个激光脉冲沿共享光路 （34）到样品（40）上呈现时间叠加; 布置在共享光路（34）中的共享啁啾单元（36），用于对影响第一激光脉冲和第二激光脉冲两者的频率修正; 以及布置在第一光路（14）中的至少一个单独的啁啾单元（18），用于仅对第一激光脉冲影响的频率修正。 共享啁啾单元（36）和单独的啁啾单元（18）彼此协调以实现目标状态。 单独的啁啾单元（18）被耦合到控制系统（20），通过该控制系统（20），单独的啁啾单元（18）可以通过取决于第一激光脉冲的波长的控制参数来控制，以便建立目标状态。