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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Optics and Photonics
Journal Basic Information
Journal DOI :
Optical Society of Korea
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Volume & Issues
Volume 26, Issue 6 - Dec 2015
Volume 26, Issue 5 - Oct 2015
Volume 26, Issue 4 - Aug 2015
Volume 26, Issue 3 - Jun 2015
Volume 26, Issue 2 - Apr 2015
Volume 26, Issue 1 - Feb 2015
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Binocular Holographic Three-Dimensional Imaging System Using Optical Scanning Holography
Kim, You Seok ; Kim, Taegeun ;
Korean Journal of Optics and Photonics, volume 26, issue 5, 2015, Pages 249~254
DOI : 10.3807/KJOP.2015.26.5.249
In this paper we propose a binocular holographic three-dimensional (3D) imaging system using optical scanning holography. To realize a binocular 3D holographic imaging system, we could acquire the complex holograms of a real object after designing a holographic display system based on interpupillary distance and pupil size, and these holograms could be optically reconstructed following numerical signal processing with an amplitude spatial light modulator. The proposed binocular 3D holographic imaging system using optical scanning holography was verified experimentally.
Optoacoustic Ultrasound Generator Based on Nanostructured Germanium
Yoon, Sang-Hyuk ; Heo, Junseok ;
Korean Journal of Optics and Photonics, volume 26, issue 5, 2015, Pages 255~260
DOI : 10.3807/KJOP.2015.26.5.255
We have fabricated an optoacoustic ultrasound generator based on nanostructured germanium (Ge). Ge thin films were deposited via e-beam evaporation and then etched using a metal-assisted chemical (MAC) method to form nanostructured Ge films. The measured intensity of ultrasound from the nanostructured Ge covered with PDMS was about 3 times stronger than that of 100-nm-thick chromium (Cr). When the nanostructured Ge was embedded in the PDMS, the intensity of ultrasound became 8.5 times as strong compared to the 100-nm-thick Cr.
Laser-Driven Peeling of the Photoresist-Protective Film of a Printed Circuit Board
Min, Hyung Seok ; Heo, Jun Yeon ; Lee, Jee Young ; Lee, Myeongkyu ;
Korean Journal of Optics and Photonics, volume 26, issue 5, 2015, Pages 261~264
DOI : 10.3807/KJOP.2015.26.5.261
In this paper we show that the photoresist-protective film of a printed circuit board (PCB) can be delaminated from the underlying photoresist layer by a single pulse of a nanosecond laser at 532 nm. After locally peeling the edge of the PCB with a laser beam of 9 mm size, Scotch tape was attached to the irradiated region to peel off the whole protective film. For a certain range of pulse energies the peeling probability was 100%, without leaving any damage. Since the use of a laser in initial delamination is noncontact and nondamaging, it may be more efficiently utilized in the PCB industry than the conventional knurling method based on mechanical pressing.
Optical Properties of Graphene Doped ZnS:(Cu,Al) Inorganic Electroluminescence Devices by Screen Printing
Jo, Sung Ho ; Lee, Sang Nam ;
Korean Journal of Optics and Photonics, volume 26, issue 5, 2015, Pages 265~268
DOI : 10.3807/KJOP.2015.26.5.265
An inorganic electroluminescence device based on a green ZnS:(Cu,Al) phosphor was fabricated by a screen printing method. Graphene was added to the phosphor layer to increase the electroluminescence intensity. As the graphene concentration increased, the photoluminescence intensity decreased; on the other hand, the electroluminescence intensity increased, up to 0.6 wt%.
Optical Design of an Integrated Two-Channel Optical Transmitter for an HDMI interface
Yoon, Hyun-Jae ; Kang, Hyun-Seo ;
Korean Journal of Optics and Photonics, volume 26, issue 5, 2015, Pages 269~274
DOI : 10.3807/KJOP.2015.26.5.269
In this paper we design the optical system for an integrated two-channel TO-type optical transmitter to apply the HDMI interface using the code V simulator. The proposed integrated two-channel optical transmitter has two VCSELs attached in parallel on an 8-pin TO-CAN package, on top of which is a lens filter block (
) composed of hemispherical lenses and WDM filters. Considering two-channel transmitters manufactured with wavelength combinations of 1060nm/1270nm and 1330nm/1550nm, we obtain the optimum value of the diameter of the hemispherical lens as 0.6 mm for both combinations, and the distances L between the lens filter block and ball lens as 1.7 mm and 2.0 mm for the 1060nm/1270nm and 1330nm/1550nm wavelength combinations, respectively. At this time, the focal length f0 of the lens filter blocks for wavelengths of 1060, 1270, 1330, and 1550 nm are 0.351, 0.354, 0.355, and 0.359 mm, respectively, and the focal lengths F of light passing through the lens filter block and ball lens are 0.62 mm for 1060nm/1270nm and 0.60-0.66 mm for 1330nm/1550nm wavelength combinations.
Ellipsometric Expressions for a Sample Coated with Uniaxially Anisotropic Layers
Kim, Sang Youl ;
Korean Journal of Optics and Photonics, volume 26, issue 5, 2015, Pages 275~282
DOI : 10.3807/KJOP.2015.26.5.275
The effective reflection coefficients for light obliquely incident upon a substrate coated with uniaxially anisotropic films and with isotropic films are derived. Multiple reflections inside anisotropic films, as well as those inside isotropic films, are properly treated. These expressions, together with the related ellipsometric expressions, can be used to find the nonuniform distribution of an uniaxially anisotropic film perpendicular to the film`s surface, by approximating it as consisting of uniaxially anisotropic uniform layers and applying the conventional modeling technique for spectroscopic ellipsometry.