Korea Institute of Science and Technology

Korea Institute of Machinery & Materials

Jiyeon Choi

Dohyun Kim

Sungil Kim

Md Siam Uddin

Yong Won Song

Hee-Shin Kang

Sangsoo Choi

Ji-Whan Noh

Heeseok Kim

Jungsuk Song

Younsu Lee

Jangwon Choi

Kwangyun Jung

Hyon Kee Sohn

Sung-Hak Cho

Kyung Han Kim

Sang Hoon Ahn

A femtosecond laser source according to an embodiment of the present invention includes: a pulse generator that converts a continuous wave laser into an optical pulse train; a burst generator that separates the optical pulse train into a plurality of burst pulses; a pulse amplification and spectral broadening unit that expands the spectrum by amplifying a plurality of burst pulses; and a pulse compressor that compresses a plurality of amplified burst pulses to generate a femtosecond laser with a pulse width of 1 picosecond (10s) or less.

Fiber-based high repetition rate femtosecond laser source and laser processing system including the same

The present disclosure discloses an optical device structure including an optical fiber including a core part, a clad part, and a three-dimensional micro hole structure in the clad part, wherein a surface of the three-dimensional micro hole structure is provided with at least a non-flat surface, and a conformal graphene layer is formed on the surface of the three-dimensional micro hole structure, and a method of manufacturing the same.

Structures in optical devices having graphene and manufacturing method for the same

The present invention relates to a method and a device for automatically verifying a security event. The method for automatically verifying a security event, according to one embodiment of the present invention, comprises the steps of: receiving a security event and information related to the security event; extracting a feature of the security event; classifying the security event; and verifying the security event.

Method and device for automatically verifying security event

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Daejeon, South Korea

Jiyeon Choi