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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
Editor in Chief :
Volume & Issues
Volume 2, Issue 4 - Dec 1991
Volume 2, Issue 3 - Sep 1991
Volume 2, Issue 2 - Jun 1991
Volume 2, Issue 1 - Mar 1991
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Determination of Optical Constants and Thickness of Thin Metal Films by Measurement of Surface Plasmon Resonance
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 59~66
Resonance angle and optimum thinckness of various thin metal films for surface plasmon resonance were calculated using an admittance diagram and optical constants and thickness of thin Ag films and Al films were determined by fitting the measured reflectance of surface plasmon resonance. Two wavelengths of an Ar ion laser were employed to select the unique optical constants which have the same thickness at two wavelengths. Also, when these films were exposed to the air, the shift of surface plasmon resonance was measured and the optical constants of modified thin films were determined.
Gain Characteristics of Fabry-Perot Type AlGaAs Semiconductor Laser Amplifier
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 67~73
The unsaturated signal gain, signal gain bandwidth, and saturation power which are important parameters determining characteristics of the semiconductor laser amplifier were measured for an AlGaAs Fabry-Perot cavity type laser amplifier and compared with the results of Fabry-Perot formula. The unsaturated signal gain 25 dB is obtained near oscillation thereshold current at
input power. The corresponding signal gain bandwidth was about 3 GHz. Also. We measured the variation of the saturation signal gain and saturation power.
Radiation Force Exerted on a Homogeneous Sphere by Two Circularly-Polarized Counterpropagating TEM00 Laser Beams
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 74~82
This study is to investigate the distribution of the radiation force exerted on a homogeneous sphere by two circularly-polarized counterpropagating
laser beams. The time-averaged expressions of the rediation force are derived for both cases of two interfering
laser beams and a standing plane electromagnetic wave. The radiation force is numerically calculated and the physical interpretations of computed results are presented. The results in this paper will be useful in the optical levitation experiment using two counterpropagating
laser beams or a standing plane electomagnetic wave.
Off-axis pSDF Spatial Matched Filter for Pattern Classification
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 83~88
Studies on space-invariant pattern recognition have been carried out from various approaches. Pattern recognition system using SDF filter, from weighted linear summation of tranining images, has been the focus of research since its first appearence. In this thesis, off-axis pSDF spatial matched filter has been constructed by combining angular multiplexing of off-axis reference plane wave with pSDF filter made from pseudo-inverse algorithm, and transformed to phase only filter. From observation of the correlation responses in the correlation plane, it is shown that proposed off-axis pSDF spatial matched filter is available to pattern classification and can be used for optical correlator.
Fabrication of High Efficiency Silver Halide Holograms by Reversal Bleaching Process
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 89~95
High diffraction efficiency holographic gratings in silver halide emulsion were fabricated by using reversal bleaching process. The diffraction efficiencies of gratings were improved greatly by applying rapid drying procedure with isopropyl alcohol after bleaching with optimized developers. The dependency of diffraction efficiencies on the different groups of developers, the concentration of bleaching solutions, and the drying methods are investigated experimentally and the results were analyzed theoretically. Same as usual reversal bleaching process, the fabricated gratings showed very low scttering compared to those made by conventional bleach process. The maximum diffraction efficiency was 88%.
A study on the Correlation of Peak counts between the Mechanical and the Optical Measurements in Surface Metrology
Nahm, Kie B. ; Tiziani, Hans J. ;
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 96~102
Monitoring the surface profile real time on the manufacturing line of planar products has been accomplished by employing the scattering of a laser light. The laser beam was focused onto the surface and the direction of the reflected beam was utilized to obtain the slope of the surface facet. By taking data fast enough, it was possible to obtain the microscopic surface structure. The mean roughness thus obtained agreed well with the ones found with the mechanical stylus instrument. There was discrepancy between the two results as to the number of peaks per com. A simple model based on the deconvolution of the raw data was found adequate to improve the agreement to an acceptable level.
Progresses in Nonlinear Glass Research
Yuiko T. Hayden ;
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 103~107
Nonlinearity of glass had not been remarkably large among all the available nonlinear materials. However, its superiority in optical and mechanical properties has attracted much attention for the practical application. To this goal the recent interests in this field have been shifting from the understanding of nonlinear mechanisms to the improvements of nonlinear properties.
Langmuir-Blodgett Methods and Photelectronic Devices
Korean Journal of Optics and Photonics, volume 2, issue 2, 1991, Pages 108~113
This paper describes the necessity and utility of Langmuir-Blodgett (L-B) methods in developing molecular electronic devices. It also covers the application area and limitations of the methods. With L-B methods, the membrane thickness can be controlled in a range of 50 nm and 1000 nm depending on nature of the materials and layering methods. The molecular arrangement within the membrane can be altered by altering the surface pressure and nature of the layering materials. Such a variation can be altered by altering the surface pressure and nature of the layering materials. Such a variation can offer a new application of the methods to the future electronic devices. More over 2nd and 3rd nonlinearity generated in the nonsymmetric thin membrane will be used in the development of the optoelectronic devices.