Electronics and Telecommunications Research Institute

Gwangju Institute of Science and Technology

Hwang Woon Lee

Moon Youn Jung

Dong Hoon Song

Dong-Ho Shin

Seunghwan Kim

Hyung Ju Park

Seon Hee Park

Hyeon-Bong Pyo

Nam Soo Myung

Won Bae Cho

Dong Ho Shin

Do Kyeong Ko

Disclosed is a high power ultra-short pulsed laser device increasing pulse energy by using resonators. A pulsed laser device may comprise a first resonator making a pump beam resonate primarily and passing the pump beam which resonated through a first output mirror; and a second resonator comprising a first multiple reflection mirror and a second multiple reflection mirror. Also, the first multiple reflection mirror includes at least one first small area mirror, and the second multiple reflection mirror includes at least one second small area mirror, and the second resonator makes the laser beam delivered from the first resonator resonate by reflecting the laser beam repetitively. Therefore, the pulsed laser device may increase pulse energy without using a multi-stage amplifier so that a high power ultra-short pulsed laser beam can be generated.

High power ultra-short laser device

Provided is an analysis apparatus for a high energy particle and an analysis method for a high energy particle. The analysis apparatus for the high energy particle includes a scintillator generating photons with each unique wavelength by the impinging with a plurality of kinds of accelerated high energy particles, a parallel beam converting unit making the photons proceed in parallel to one another, a diffraction grating panel making the photons proceeding in parallel to one another enter at a certain angle, and refracting the photons at different angles depending on each unique wavelength, and a plurality of sensing units arranged on positions where the photons refracted at different angles from the diffraction grating panel reach in a state of being spatially separated, and detecting each of the photons.

Analysis apparatus for high energy particle and analysis method using the same

Provided is an ion beam treatment apparatus including the target. The ion beam treatment apparatus includes a substrate having a first surface and a second surface opposed to the first surface, and including a cone type hole decreasing in width from the first surface to the second surface to pass through the substrate, wherein an inner wall of the substrate defining the cone type hole is formed of a metal, an ion generation thin film attached to the second surface to generate ions by a laser beam incident into the cone type hole through the first surface and strengthen, and a laser that emits a laser beam to generate ions from the ion generation thin film and project the ions onto a tumor portion of a patient. The laser beam incident into the cone type hole is focused by the cone type hole and is strengthened.

Targets for generating ions and treatment apparatuses using the targets

Provided is an apparatus for generating a proton beam, which includes a laser system providing a laser pulse, a target generating a proton beam by using the laser pulse, and a phase conversion plate disposed between the laser system as a light source and the target to convert the laser pulse into a circularly polarized laser pulse having a spiral shape.

Apparatuses for generating proton beam

Growing community of inventors

Daejeon, South Korea

Hwang Woon Lee