Go to the main menu
Skip to content
Go to bottom
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 4, Issue 4 - May 1993
Volume 4, Issue 3 - May 1993
Volume 4, Issue 2 - May 1993
Volume 4, Issue 1 - May 1993
Selecting the target year
The Design of athermalized Tessar Type by Optimization of Mounting structure and Materials
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 133~139
When environmental changes are occured, the analytic approaches to the reset and compensation of a optical system are presented. It is shown that the temperature change is the most irnpotant factor among the environmental changes, and useful discussion for athermalization were given. Finally we could obtain thermally stable Tessar system by optimization of mounting structure and materials.
Computation of the ERF from the OTF
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 140~144
A computer program for computing the edge response function(ERF) from the optical transfer function( 0TF) was developed. The ERFs of un-aberrated optical system and aberrated optical system were studied by the use of that program. We calculated the ERFs of the optical systems with a single aberration and with a combined aberration. In sagittal case, the ERE of the optical system with defocus or spherical aberration was worse than that with coma. In tagential case, the ERF of the optical system with coma was worse than that with defocusing or spherical aberraion. Both the shape and the position of ERF were varied with coma, but only the position of ERF was varied with distortion, in tangential case.
Design and Development of a Lens for High Definition Projection TV
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 145~156
From the optimal system specifications of optical parts in rear projection TV focused on competitive price and performances, we designed and developed projection lens which is able to be used on current broadcast standard NTSC and HDTV in common. Through the serial processes, which are initial design of all aberrations free, aspherization of the plastic lenses, optimization with tolerances and manufacturability, and athermalization, the lens was designed. The developed CRT-lens ass'y could display the 40-55 inches image and it's resolution is more than 1000 TV-lines.
Optical Autofocus System for Wafer Steppers using PSD as the Position Sensor
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 157~161
An optical autofocus system for a DUV KrF excimer laser wafer stepper was developed by using the PSD (Position Sensitive Detector) as the position sensor. The laser beam was incident on the surface of wafer and the reflected beam was magnified optically by a lens. And the beam was directed onto the surface of PSD by a mirror system. The spatial resolution of the autofocus system was found to be
Design of Nonpolarizing Beam Splitter Using the Multilayer Thin Film System
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 162~167
The reflectance and transmittance of dielectric films at nonzero angle of incidence show strong polarization effects, and for many applications these effects are not desirable. In this work, some design methods are introduced, and we designed the nonpolarizing beam splitter using the outest equivalent quarter-wave layers. During this, the reflectances are varied under the constant optical thickness.
Design Fabrication and Tresting of Cholesteric Liquid Crystal Circular Polarizer
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 168~172
We measured the spectral transmittance of the cholesteric mixtures of ZLI-1167 and CB15 for various weight fractions of CB15 in the mixture to find out the relationship between the center wavelength of the selective reflection band and the weight fraction of CB15 in the mixture. Left handed circular polarizer for 632.8 nm was designed and fabricated with this mixture whose weight fraction of CB15 was 33.19%. The ellipticity of the elliptical polarization of the transmitted light was measured to be 0.98 showing excellent property of the CLC circular polarizer.
Characteristics of Ramsey Resonance Signal in an Optically Pumped Cesium Atomic Clock
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 173~180
We observed Ramsey resonance signals from an optically pumped cesium atomic clock and compared them with the theoretical results calculated from the Ramsey transition probabilities. The theoretical results were in good agreement with the experimental results when the weighting factor of
was taken into account to the Maxwellian distribution of velocities in the atomic beam. It was also found that the clock transition signal of Rabi-Ramsey spectra can be greatly enhanced by using two lasers with the proper polarizations as pumping sources of cesium atoms.
Wavelength Measurement of Pulsed Tunable Laser Using Optogalvanic Effect
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 181~187
Optogalvanic spectrum of Ne has been obtained in the visible wavelength region 550-600 nm by using pulsed tunable dye laser. The recorded laser wavelengths are calibrated on the basis of the accurately-known Ne atomic transition lines. The accuracy of the measured wavelength is
0.005 nm. We tabulated the wavelengths and the relative intensities of the OG signals which are useful to calibrate the dye laser using R-590, R-610 dyes.
Saturation Spectroscopy with Optical Pumping in
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 188~194
By applying the Nakayama's theory of saturation spectroscopy to 87Rb
lines, taking into account the optical pumping process, the relative intensities of the resonance signals were calculated for various polarization combinations of pump and probe beams. The saturated absorption spectra were observed with a linewidth-narrowed semiconductor laser. As the result, it was found that the theoretical calculations were in good agreement with the experimental observations in the case where the geomagnetic field was- shielded.
Output Enhancement of Coaxial Flashlamp Pumped Rhodamine 6G Dye Laser by Energy Transfer
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 195~199
The output energy of Rh-6G dye laser was enhanced by the energy transfer in the mixture of Rh-6G and C-545. The laser was pumped by coaxial flashlamp filled argon gas. The optimum concentration of Rh-6G was
without mixing. The output energy was enhanced about 70 % at 0.4 % C-545 mixture with respect to the concentration of Rh-6G. The peak output power and the output energy were 27 kW and 50 mJ at the pumping energy of 346 J.
Second Harmonic Generation of Tisapphire Laser in
, BBO Crystals
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 200~205
We generated the second harmonic of Ti:sapphire laser in LiI
and BBO crystals. Two LiI
, crystals and a BBO crystal were used, and the lengths of LiI
crystals were 5, 10 mm and that of BBO was 7 mm. We measured the conversion efficiencies of LiI
and BBO in the wavelength range of 780-810 nm, and compared with the caculation of theory. The measured second harmonic conversion coefficients were (1.06
(5mm), and (2.96
(BBO, 7 mm) at the fundamental wavelength of 794 nm.
Second Harmonic Generation of Low Power Laser Diode Using a Ring Enhancement Cavity
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 206~211
We carried out the second harmonic generation of low power CW laser diode with maximum power of 30 mW in
crystals. We used a ring enhancement cavity to increase the second harmonic conversion efficiency. The ring enhancement cavity was Composed of two flat mirrors and two concave mirrors. The focal length of concave mirrors was 25 mm, and 5 mm long and 10 mm long
crystals were used. We measured the second harmonic power according to the pumping power and compared with theoretical value. We obtained 397 nm second harmonic power of about
in 10 mm long
crystal with the fundumental 794 nm pumping power of 28 mW.
Measuring CO Concentration in a Flame with Broadband CARS
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 212~219
To reduce the mode noise induced from a multimode dye laser, a modeless laser generating amplified spontaneous emission was used as Stokes beam of the broadband CARS. A new technique for measuring species concentration from the modulation dip of nonresonant background of broadband CARS spectrum was proposed. The modulation dip was numerically calculated and fitted as a function of the concentration of the minor species and temperature of gas sample. We applied this technique in measuring CO concentration in a static cell and also the profile of CO concentration in a CHdair premixed flame of a counterflow burner.
Energy Levels of Rhodium ions in Phosphate Glasses
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 220~225
This is the first reported observation of absorption and emission of glasses with a 4d transition metal ion(rhodium). The optical absorption and photoluminescence spectra, and the lifetimes of rhodium ions in phosphate glasses are interpreted on the basis of strong-field scheme of Sugano-Tanabe diagram. We conclude that rhodium ion is present in its divalent form.
transitions are superimposed and observed at 460 nm. Whereas
transitions are observed at 650 nm and 580 nm, respectively.
Construction Broadband CARS Spectrometer and Uncertainty Analysis of Temperature Measurement
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 226~232
A broadband CARS system is constructed for shot by shot measurement of a full CARS spectrum, which consists of a frequency doubled Nd:Yag laser, broadband mode-less laser and optical multi-channel analyzer installed in a double grating monochromator. To increase the accuracy of CARS temperature measurement and get better the fitting goodness, we have measured the slit function of the detection system and determined the analytical functional form of the slit function. Accuracy of the CARS system for temperature measurement is evaluated from the difference between the best-fit temperature of CARS spectrum and temperature of thermocouple reading. The uncertainty of the temperature measurement is found to be less than 1.5% in temperature range from 300 K to 1300 K.
Optical Schroedinger Cat States
Korean Journal of Optics and Photonics, volume 4, issue 2, 1993, Pages 233~241
Quantum superposition states are reviewed from an optical point of view. Production of the optical superposition states, nonclassical properties of the superposition states and influence of vacuum on the nonclassical properties of the superposition states are discussed.