• Optical Science and Technology
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• v.8 no.4
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• pp.26-29
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• 2004

• Proceedings of the Optical Society of Korea Conference
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• 1998.08a
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• pp.108-109
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• 1998

• Proceedings of the Optical Society of Korea Conference
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• 2009.10a
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• pp.40-41
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• 2009

• Proceedings of the Optical Society of Korea Conference
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• 2007.07a
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• pp.11-12
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• 2007

• Proceedings of the Optical Society of Korea Conference
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• 1995.06a
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• pp.7-9
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• 1995

• Proceedings of the Optical Society of Korea Conference
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• 2005.07a
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• pp.142-143
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• 2005

• Proceedings of the Optical Society of Korea Conference
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• 2002.11a
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• pp.78-79
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• 2002

• Proceedings of the Korean Society of Potoscience Conference
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• spring
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• pp.33-33
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• 1996

• Bulletin of the Korean Chemical Society
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• v.19 no.8
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• pp.822-824
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• 1998

The simple and convenient measurement of the dissociation constant of an indicator, thymol blue, was achieved by using a portable diode-laser/fiber-optic thermal lensing spectroscopy, which consisted of a visible diode laser, a photodiode, and an optical fiber. It gives comparable results to the cited value obtained from a conventional UV/VIS spectroscopy.

• Journal of the Optical Society of Korea
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• v.15 no.1
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• pp.78-81
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• 2011

We demonstrate a high-spatial-resolution imaging and spectroscopy tool using a solid immersion lens (SIL), a hemispherical lens made of high refractive index glass (n ~2). Photoluminescence (PL) images of single CdSe nanocrystals confirm a numerical aperture enhancement factor of ~2, close to the refractive index of the SIL. In particular, a bare-eye observation of PL signals emitted by single nanocrystals with ${\sim}10\;{\mu}m^{-2}$ densities was possible over an ${\sim}30\;{\mu}m$ diameter region. In addition, the PL spectra of single CdSe nanocrystals were successfully measured at room temperature. Thus, this SIL microscope ensures a simple but powerful method for nanostructure spectroscopy.