公开(公告)号：US08709184B2

公开(公告)日：2014-04-29

申请号：US13739534

申请日：2013-01-11

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Soo Hyun Kim ,  Kyung-Suo Kim ,  Sung Yoon Ryu ,  Won Sik Kwon ,  Hyub Lee ,  Jin Hwan Kim ,  Jin Doo Choi ,  Seung Hwan Jo ,  Seung Ryeol Oh ,  Sang Wook Lee

IPC: B29C65/52 ,  B32B37/12 ,  B32B38/10 ,  B32B43/00

CPC classification number: B32B38/10 ,  B82Y20/00 ,  B82Y30/00 ,  G02F1/3523 ,  G02F2202/36 ,  H01S3/1115

Abstract: Provided is single-walled carbon nanotube saturable absorber production via a multi-vacuum filtration method, and more particularly, single-walled carbon nanotube saturable absorber production via a multi-vacuum filtration method, capable of depositing a carbon nanotube thin film on a filter using a vacuum chamber and a membrane filter, etching the filter using an etchant so as to be transferred to an upper surface of the polymer, coating the polymer on the carbon nanotube to thereby produce a carbon nanotube saturable absorber, as a method of producing a carbon nanotube thin film to transfer the thin film to the polymer using a multi-filtration method in order to produce a passive saturable absorber to be used in laser oscillation.

Abstract translation: 提供了通过多真空过滤方法制备的单壁碳纳米管可饱和吸收体，更具体地，通过多真空过滤方法制备单壁碳纳米管可饱和吸收体，能够在过滤器上沉积碳纳米管薄膜，使用 真空室和膜过滤器，使用蚀刻剂蚀刻过滤器，以便转移到聚合物的上表面，将聚合物涂覆在碳纳米管上，从而制备碳纳米管可饱和吸收体，作为生产碳的方法 使用多过滤方法将薄膜转移到聚合物上，以便产生用于激光振荡的无源可饱和吸收体。

公开(公告)号：US08817364B2

公开(公告)日：2014-08-26

申请号：US13739538

申请日：2013-01-11

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Soo Hyun Kim ,  Kyung-Soo Kim ,  Sung Yoon Ryu ,  Won Sik Kwon ,  Hyub Lee ,  Jin Hwan Kim ,  Jin Doo Choi ,  Seung Hwan Jo ,  Sang Wook Lee ,  Seung Ryeol Oh

IPC: H01S3/106

CPC classification number: H01S3/106 ,  H01S3/06712 ,  H01S3/06791 ,  H01S3/10046 ,  H01S3/1061 ,  H01S3/1115 ,  H01S3/1118 ,  H01S3/1121 ,  H01S3/113 ,  H01S3/1608

Abstract: Provided is a device of generating various types of pulses by controlling a distance between saturable absorber connectors, and more particularly, a device of generating various types of pulses by controlling a distance between saturable absorber connectors, capable of actively controlling a distance between saturable absorbers to completely overcome a disadvantage that an opened space is present in a cavity or a disadvantage that a fiber component should be changed and implementing a simple design of the entire fiber laser cavity since only a saturable absorber part, which is a portion of a fiber laser cavity, should be designed, as a carbon nanotube saturable absorber part in a passively mode-locked fiber laser generating apparatus using the saturable absorber.

Abstract translation: 提供了通过控制可饱和吸收器连接器之间的距离来产生各种类型的脉冲的装置，更具体地，通过控制可饱和吸收器连接器之间的距离来产生各种类型的脉冲的装置，能够主动地控制可饱和吸收器之间的距离 完全克服了在空腔中存在开放空间的缺点或者纤维部件应当改变并且实现整个光纤激光腔的简单设计的缺点，因为只有可饱和的吸收部分是光纤激光腔的一部分 应设计为使用可饱和吸收体的被动锁模光纤激光发生装置中的碳纳米管可饱和吸收体。

公开(公告)号：US10902652B2

公开(公告)日：2021-01-26

申请号：US16048996

申请日：2018-07-30

Applicant: THE ASAN FOUNDATION ,  UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATION ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jung Won Kwak ,  Sang Wook Lee ,  Byung Chul Cho ,  Chung Hwan Lee ,  Seungryong Cho ,  Changhwan Kim

IPC: G06T11/00 ,  G06T7/00 ,  G06T5/00

Abstract: A method of reducing an artifact by using structural similarity. The method includes at least: obtaining a plurality of input Computed Tomography (CT) images including a first CT image and a second CT image, generating an artifact map in which anatomical information is removed and artifacts information is remained, by subtracting the second. CT image from the first CT image, generating, by the computer, a structural similarity map between each CT image and the artifact map, and generating, by the computer, a final reconstructed image by comparing particular parts on images of a plurality of structural similarity maps with each other and selecting data of an input CT image which has been used to generate a particular part of a structural similarity map having a lowest degree of structural similarity, as data of a particular part on the final reconstructed image.

公开(公告)号：US20130287051A1

公开(公告)日：2013-10-31

申请号：US13859089

申请日：2013-04-09

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Soo Hyun KIM ,  Kyung-Soo KIM ,  Sung Yoon RYU ,  Won Sik KWON ,  Hyub LEE ,  Jin Hwan KIM ,  Jin Doo CHOI ,  Seung Hwan JO ,  Sang Wook Lee ,  Seung Ryeol OH

IPC: H01S3/13

CPC classification number: H01S3/13 ,  H01S3/06791 ,  H01S3/1061 ,  H01S3/1118 ,  H01S3/136 ,  H01S3/139

Abstract: Provided are an apparatus and method for stabilizing a pulse of a fiber-type femtosecond laser, and more particularly, to an apparatus for stabilizing a pulse of a fiber-type femtosecond laser, which adjusts a distance between a saturable absorption material and an optical fiber connection unit of the femtosecond laser to automatically perform mode-locking, thereby obtaining a laser pulse stabilized for a long time, and a method for stabilizing the pulse of the fiber-type femtosecond laser. The apparatus for stabilizing a pulse of a fiber-type femtosecond laser in a fiber-type femtosecond laser system including a pump laser (100) and a fiber cavity (200) includes a distance adjustment part (300) adjusting a distance (d) between a saturable absorption material (700) and a connection unit of an optical fiber (310) which are provided within the fiber cavity (200).

Abstract translation: 提供一种用于稳定纤维型飞秒激光器的脉冲的装置和方法，更具体地，涉及一种用于稳定纤维型飞秒激光器的脉冲的装置，其调节可饱和吸收材料和光纤之间的距离 飞秒激光的连接单元自动执行锁模，从而获得长时间稳定的激光脉冲，以及稳定纤维型飞秒激光的脉冲的方法。 在包括泵浦激光器（100）和光纤腔（200）的光纤型飞秒激光系统中，用于稳定纤维型飞秒激光的脉冲的装置包括距离调整部（300），调整距离调整部（300） 设置在光纤腔（200）内的饱和吸收材料（700）和光纤（310）的连接单元。