Agency for Defense Development

Other

Duk Young Kim

Taek Jeong

Yonggi Jo

Yong Sup Ihn

Dong Kyu Kim

Zaeill Kim

Zae Ill Kim

Junghyun Kim

Jung Hyun Kim

Dongkyu Kim

Nam Hun Park

Sangkyung Lee

Suyong Lee

Su-Yong Lee

Jihwan Kim

Jaesung Heo

Yong Gi Jo

Su Yong Lee

Sang Kyung Lee

An apparatus for pseudo thermal light source ghost imaging and range sensing using narrow-band spontaneous emission includes: a pseudo thermal light source including a resonator type laser diode; a temperature controller configured to control a temperature of the pseudo thermal light source; a current controller configured to control a current of the pseudo thermal light source; a beam splitter configured to split a laser beam emitted from the pseudo thermal light source into a first beam and a second beam; and a temporal correlator configured to infer a target range to an object through temporal coherence between the first beam and the second beam, wherein the pseudo thermal light source oscillates a laser beam having second order coherence when a specific current is applied according to temperature.

Apparatus and method for pseudo thermal light source ghost imaging and range sensing using narrow-band spontaneous emission

Disclosed is a technology for stabilizing a phase using a modulator bias controller and a laser that emits a beam with a frequency fixed.

Phase stabilization system and phase stabilization method using the same

An object of the present invention is to provide a microwave-optic conversion system of quantum signals employing a 3-dimensional microwave resonator and a crystal oscillator, which enables microwave-optic conversion employing a microwave resonator and a widely commercialized crystal oscillator which may be manufactured by simple machine processing. In order to achieve the object, the microwave-optic conversion system of quantum signals employing a 3-dimensional microwave resonator and a crystal oscillator includes: a microwave resonator including a hollow body made of metal, and a penetration hole formed on a front surface of the hollow body; and a crystal oscillator positioned inside the hollow body.

Microwave-optic conversion system of quantum signals employing 3-dimensional microwave resonator and crystal oscillator

Provided is a method of generating a squeezed quantum illumination light source, including generating a dual mode squeezed light source including a signal mode and an idler mode, obtaining a degree of additional squeezing for the dual mode squeezed light source based on object information, determining a squeezing angle and a degree of operation that satisfy the degree of additional squeezing for each of the signal mode and the idler mode, and squeezing the dual mode squeezed light source based on the squeezing angle and the degree of operation, and provided is a quantum radar device using the squeezed quantum illumination light source.

Method for generating squeezed quantum illumination light source and quantum radar device using the same

A magnetic field application device according to an embodiment includes a first coil assembly and a second coil assembly spaced apart in parallel from each other, a power supply configured to apply respective currents to the first coil assembly and the second coil assembly, a controller, and a resonator accommodation unit disposed between the first coil assembly and the second coil assembly, wherein each of the first coil assembly and the second coil includes a coil configured to generate a magnetic field, a guide member connected to a terminal of the coil, a magnetic material mount connected to a terminal of the guide member, and a magnetic material fixed to the magnetic material mount, and wherein the controller is configured to control the currents applied from the power supply to the first coil assembly and the second coil assembly.

Magnetic field application device and magnetic field application system including the same

Disclosed is an apparatus for single-pixel imaging using quantum light, the apparatus including: a light source which generates a photon pair through spontaneously parametric down conversion of a non-linear crystal and splits the photon pair into an idler photon of first polarized light and a signal photon of second polarized light; a signal processing unit which aligns the signal photon with the first polarized light and modulates the signal photon with a pattern of a spatial light modulator, and sends the modulated signal photon to a target; and a signal detecting unit which simultaneously measures signal photons collected after an interaction of the idler photon and the target to obtain an image.

Apparatus for single-pixel imaging with quantum light

The present invention relates to an apparatus for automatic brake of walking support machine which is safe on downward slopes by preventing over speed due to the acceleration of gravity and protect user on upward slopes. The present invention is devised for walking support machines consist of steering handles (), main body (), and a front wheel () and 3 rear wheels (), and is characterized by being comprised of; fixed disks () which are installed at the bottom of said main body () and support rear wheels () to enable rotation; high speed gears () and low speed gears () which are installed in said rear wheels () concentrically; brake drums () which are installed on the outside of said fixed disks (); 1gears () installed on the center shaft of said brake drums (); 2gears () which are installed on one side of said brake drums () with unidirectional clutches (C) to prevent backward running and assembled with said 1gear; adjusting knobs () which are installed inside of said fixed disks (), rotatable, and assembles 1gears () and 2gears () selectively with high speed gears () and low speed gears (); and two pairs of brake disks () installed inside said brake drums () to receive spring (S) tension and rotate in connection with said 1gears (); in said two rear wheels.

Apparatus for automatic brake of walking support machine

Growing community of inventors

Daejeon, South Korea

Duk Young Kim