Abstract: A femtosecond pulse laser apparatus includes a pump light source configured to provide a pump light, a gain medium configured to obtain a gain of a laser light using the pump light, a first curved mirror and a second curved mirror, which are provided at both sides of the gain medium, an output mirror configured to transmit a portion of the laser light and reflect the other portion of the laser light to the gain medium, a mode locking portion configured to generate a femtosecond pulse of the laser light, and an acoustic wave generator configured to provide an acoustic wave into the gain medium so as to adjust self-phase modulation of the laser light.

Abstract: Provided are a pulse compressor and a two-photon excited fluorescence microscope. The microscope includes a light source which generates a laser beam having a pulse, a pulse compressor which compresses the pulse of the laser beam, an objective lens which provides the laser beam to a specimen, and image sensors which receive the laser beam and obtain images of the specimen. The pulse compressor may include a grating plate, a corner cube provided on one side of the grating plate, and a retroreflector provided on the other side of the grating plate.

Abstract: Disclosed is a femtosecond laser device. The femtosecond laser device includes a pulse oscillator configured to generate a laser pulse, a pulse width stretcher configured to stretch a width of the laser pulse, a pulse width compressor connected to the pulse width stretcher to compress the width of the laser pulse, a pulse amplifier disposed between the pulse width compressor and the pulse width stretcher to amplifier an intensity of the laser pulse, and a nonlinear pulse attenuator including an optical fiber connected between the pulse width amplifier and the pulse width stretcher and deformed to have a spiral shape, a stretched length, or a twist.

Abstract: The present disclosure provides a sample analyzer and an analyzing method thereof. The sample analyzer includes a first beam source configured to provide a first energy beam to a sample, a second beam source configured to provide a second energy beam, which is different from the first energy beam, to the sample, a reflected beam sensor disposed between the second beam source and the sample to detect a reflected beam of the second energy beam, which is reflected by one side of the sample, and a transmitted beam sensor disposed adjacent to the other side of the sample to detect a transmitted beam of the second energy beam.

Abstract: Provided is an ion beam treatment apparatus. The ion beam treatment apparatus includes a laser generation unit, a dividing part dividing a pulse laser beam generated in the laser generation unit into a first laser beam and a second laser beam, a first target part receiving the first laser beam from the dividing part to generate a first ion beam, a second target part receiving the second laser beam from the dividing part to generate a second ion beam, a first path adjusting part adjusting a path of the first ion beam to irradiate the first ion beam to a treated patient, and a second path adjusting part adjusting a path of the second ion beam to irradiate the second ion beam to the treated patient.

Abstract: Provided is an ion beam treatment apparatus. The ion beam treatment apparatus includes a laser generation unit, a dividing part dividing a pulse laser beam generated in the laser generation unit into a first laser beam and a second laser beam, a first target part receiving the first laser beam from the dividing part to generate a first ion beam, a second target part receiving the second laser beam from the dividing part to generate a second ion beam, a first path adjusting part adjusting a path of the first ion beam to irradiate the first ion beam to a treated patient, and a second path adjusting part adjusting a path of the second ion beam to irradiate the second ion beam to the treated patient.

Abstract: Disclosed is a pulsed laser system. The pulsed laser system comprises a laser oscillator, a first optical amplifier on a rear end of the laser oscillator, a first optical adjustor on a rear end of the first optical amplifier, and a second optical adjustor on a rear end of the first optical adjustor. The first optical adjustor comprises a saturable absorber, an adjusting compressor on a rear end of the saturable absorber, and a first plasma mirror on a rear end of the adjusting compressor.

Abstract: Disclosed is a pulsed laser system. The pulsed laser system comprises a laser oscillator, a first optical amplifier on a rear end of the laser oscillator, a first optical adjustor on a rear end of the first optical amplifier, and a second optical adjustor on a rear end of the first optical adjustor. The first optical adjustor comprises a saturable absorber, an adjusting compressor on a rear end of the saturable absorber, and a first plasma mirror on a rear end of the adjusting compressor.

Abstract: Provided herein is a light transmitting cable for laser treatment, the cable including a first optical fiber configured to generate a high energy particle by a laser beam transmitted from a light source and to transmit the high energy particle to a target; and an image transmitting cable configured to transmit an image surrounding the target, thereby being capable of treating a tumor with relatively low power output while identifying a location of the tumor.

Abstract: Provided are a pulse width stretcher and a chirped pulse amplifier including the same. The pulse width stretcher includes first and second multiple reflection mirrors, and a pulse group-delay dispersion block disposed between the first and second multiple reflection mirrors and configured to refract a pulse laser beam to stretch a pulse width of the pulse laser beam.

Abstract: Provided may include an electron beam generator, an image apparatus including the same, and an optical apparatus. The optical apparatus includes a first and second laser apparatuses providing a first and second laser beams on a substrate, and a first optical system provided between the first and second laser apparatuses and the substrate to focus the first and second laser beams. The first and second laser beams overlap with each other generating an interference beam, thereby decreasing a spot size of the interference beam to be smaller than a wavelength of each of the first and second laser beams at a focal point.

Abstract: Provided may include an electron beam generator, an image apparatus including the same, and an optical apparatus. The optical apparatus includes a first and second laser apparatuses providing a first and second laser beams on a substrate, and a first optical system provided between the first and second laser apparatuses and the substrate to focus the first and second laser beams. The first and second laser beams overlap with each other generating an interference beam, thereby decreasing a spot size of the interference beam to be smaller than a wavelength of each of the first and second laser beams at a focal point.

Abstract: Provided is a laser system. The laser system includes: a laser device providing a laser pulse; a pulse compressor decreasing a pulse width of the laser pulse; a pulse stretcher disposed between the compressor and the laser device and dispersing the laser pulse; and a filament portion disposed between the pulse stretcher and the pulse compressor, wherein the filament portion transmits the laser pulse to expand a spectrum of the laser pulse by using self focusing and a filament phenomenon of the laser pulse.

Abstract: 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.

Abstract: Provided are a pulse width stretcher and a chirped pulse amplifier including the same. The pulse width stretcher includes first and second multiple reflection mirrors, and a pulse group-delay dispersion block disposed between the first and second multiple reflection mirrors and configured to refract a pulse laser beam to stretch a pulse width of the pulse laser beam.

Abstract: Provided is a chromium ion-doped laser apparatus for medical application and a method of operating the laser apparatus, the apparatus including a laser beam generating unit to generate a laser beam, a converting unit to convert a wavelength of the generated laser beam to be a set wavelength, and an emitting unit to emit the laser beam having the converted wavelength to an object.

Abstract: 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.

Abstract: 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.

Abstract: Provided herein is a light transmitting cable for laser treatment, the cable including a first optical fiber configured to generate a high energy particle by a laser beam transmitted from a light source and to transmit the high energy particle to a target; and an image transmitting cable configured to transmit an image surrounding the target, thereby being capable of treating a tumor with relatively low power output while identifying a location of the tumor.