公开(公告)号：US10079469B1

公开(公告)日：2018-09-18

申请号：US15835754

申请日：2017-12-08

Applicant: CSIR

Inventor： Ihar Anatolievich Litvin ,  Gary Rees King

IPC: H01S3/08 ,  H01S3/23 ,  H01S3/10 ,  H01S3/094 ,  H01S3/00 ,  H01S3/0941 ,  H01S3/0915 ,  H01S3/16

Abstract: A controllable laser amplifier apparatus includes a gain medium and a seed laser emitter configured to generate a seed laser beam, the seed laser emitter directed toward the gain medium. The apparatus has at least two pump laser emitters configured to generate respective pump laser beams, wherein the pump laser emitters are adjustable such that respective intensities of the pump laser beams are adjustable relative to one another and/or relative to the seed laser pump, wherein the pump laser emitters are arranged such that at least one of the pump laser beams is laterally offset relative to the seed laser beam, and wherein the pump laser beams are configured to effect a gain profile in the gain medium. An output laser beam from the gain medium is a function of at least the gain profile and the seed laser beam.

公开(公告)号：US20150009547A1

公开(公告)日：2015-01-08

申请号：US14173010

申请日：2014-02-05

Applicant: CSIR

Inventor： Sandile NGCOBO ,  Ihar Anatolievich Litvin ,  Liesl Burger ,  Andrew Forbes

IPC: G03H1/08 ,  G03H1/22

CPC classification number: G03H1/08 ,  G03H1/0005 ,  G03H1/2286 ,  G03H1/2294 ,  H01S3/0815 ,  H01S3/09415 ,  H01S3/105 ,  H01S3/1611 ,  H01S3/1643 ,  H01S2301/20 ,  H01S2301/203

Abstract: Laser apparatus includes an output coupler, a gain medium for generating laser light, a rear optical element, and an input coupler. The input coupler is arranged to direct a pump beam to the gain medium and to define an optical path between the output coupler and the rear optical element. The rear optical element is a spatial light modulator arranged to act as an intra-cavity digital holographic mirror which can be digitally addressed. The spatial light modulator displays selectively a gray-scale image of a hologram thereby to phase-modulate laser light in the cavity, thus making it possible to generate an output laser beam having a desired characteristic. The apparatus includes a computer arranged to generate at least one hologram corresponding to a desired output beam characteristic, and a driver circuit responsive to an output from the computer to generate a corresponding gray-scale image of the hologram on the spatial light modulator.

Abstract translation: 激光装置包括输出耦合器，用于产生激光的增益介质，后部光学元件和输入耦合器。 输入耦合器布置成将泵浦光束引导到增益介质并且在输出耦合器和后部光学元件之间限定光路。 后部光学元件是空间光调制器，其布置成用作可以数字寻址的腔内数字全息镜。 空间光调制器选择性地显示全息图的灰度图像，从而相位调制空腔中的激光，从而可以产生具有期望特性的输出激光束。 该装置包括计算机，其布置成产生对应于期望输出光束特性的至少一个全息图，以及响应于来自计算机的输出的空间光调制器上的全息图的相应灰度图像的驱动电路。

公开(公告)号：US09588488B2

公开(公告)日：2017-03-07

申请号：US14173010

申请日：2014-02-05

Applicant: CSIR

Inventor： Sandile Ngcobo ,  Ihar Anatolievich Litvin ,  Liesl Burger ,  Andrew Forbes

IPC: G03H1/02 ,  G03H1/08 ,  G03H1/22 ,  G03H1/00 ,  H01S3/105 ,  H01S3/081 ,  H01S3/0941 ,  H01S3/16

CPC classification number: G03H1/08 ,  G03H1/0005 ,  G03H1/2286 ,  G03H1/2294 ,  H01S3/0815 ,  H01S3/09415 ,  H01S3/105 ,  H01S3/1611 ,  H01S3/1643 ,  H01S2301/20 ,  H01S2301/203

Abstract: Laser apparatus includes an output coupler, a gain medium for generating laser light, a rear optical element, and an input coupler. The input coupler is arranged to direct a pump beam to the gain medium and to define an optical path between the output coupler and the rear optical element. The rear optical element is a spatial light modulator arranged to act as an intra-cavity digital holographic mirror which can be digitally addressed. The spatial light modulator displays selectively a gray-scale image of a hologram thereby to phase-modulate laser light in the cavity, thus making it possible to generate an output laser beam having a desired characteristic. The apparatus includes a computer arranged to generate at least one hologram corresponding to a desired output beam characteristic, and a driver circuit responsive to an output from the computer to generate a corresponding gray-scale image of the hologram on the spatial light modulator.

Abstract translation: 激光装置包括输出耦合器，用于产生激光的增益介质，后部光学元件和输入耦合器。 输入耦合器布置成将泵浦光束引导到增益介质并且在输出耦合器和后部光学元件之间限定光路。 后部光学元件是空间光调制器，其布置成用作可以数字寻址的腔内数字全息镜。 空间光调制器选择性地显示全息图的灰度图像，从而相位调制空腔中的激光，从而可以产生具有期望特性的输出激光束。 该装置包括计算机，其布置成产生对应于期望输出光束特性的至少一个全息图，以及响应于来自计算机的输出的空间光调制器上的全息图的相应灰度图像的驱动器电路。

公开(公告)号：US10084279B2

公开(公告)日：2018-09-25

申请号：US15827207

申请日：2017-11-30

Applicant: CSIR

Inventor： Ihar Anatolievich Litvin ,  Gary Rees King

IPC: H01S3/00 ,  H01S3/094 ,  H01S3/102 ,  H01S3/0941

CPC classification number: H01S3/0071 ,  H01S3/094049 ,  H01S3/094061 ,  H01S3/09408 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/102 ,  H01S3/1022

Abstract: A laser apparatus has a gain medium which has opposite ends, wherein the laser apparatus includes at least two independently controllable excitation sources, each one of the excitation sources being operable to produce an input beam to excite or pump the gain medium. Beam splitting arrangements are associated with the excitation sources are configured to split the input beam of its associated excitation source into at least two sub-beams. Beam guiding arrangements are associated with the excitation sources and are configured to direct a path of at least one of the split sub-beams from its associated excitation source, whereby each excitation source, its associated beam splitting arrangement, and beam guiding arrangement are arranged such that the sub-beams are respectively directed inwardly towards the gain medium at opposite ends.