• Proceedings of the Optical Society of Korea Conference
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• 2008.02a
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• pp.333-334
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• 2008

• Tuberculosis and Respiratory Diseases
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• v.45 no.3
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• pp.624-629
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• 1998

The complications of endotracheal intubation are inevitable, of which postintubation tracheal stenosis may be required for surgical resection with primary reconstruction. Before surgery, several less invasive therapeutic modalites including bougie dilatation, stenting, and Nd-YAG laser incision are still available in use. Especially, good results were noted in selected patients with lengthy scars of less than 1cm and without tracheomalacia using endoscopic laser incision and dilatation. We report a case of a 54 yr-old woman with postintubation tracheal stenosis who was successfully treated by endoscopic Nd-YAG laser incision and esophageal balloon catheter.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.4 no.3
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• pp.317-321
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• 2003

A conventional typewriter types letters by hammering a carbon ribbon which is attached at a paper. The laser typing process which write a micro pattern of Chrome on a silicon wafer has been developed. A glass that is coated with 100 nm Chrome (Carbon ribbon) is attached on a silicon wafer (paper). An Nd-Yag laser (hammer) is irradiated on the glass, and the Chrome is transferred on the silicon wafer. Micro patterns are made by controlling laser beam trajectory. The suggested micro pattering can be used at the high density data storage of TeraBit/in$^2$ or at the improvement of productivity of semiconductor manufacturing procedure.

• Korean Journal of Optics and Photonics
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• v.5 no.4
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• pp.445-452
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• 1994

The automatic analysis of the wavefront of laser beam is simulated numerically, and is applied to get the wavefront of the output beam of LD-pumped cw Nd:YAG laser, experimentally. The automatic analysis tool was developed by utilizing Fourier analysis method, and its usefulness is proved through numerical simulation. The wavefront error due to the analysis tool is known to be less than A/30. In order to find the wavefront of Nd:YAG laser beam, its interference fringe is obtained from Mach-Zehnder interferometer. The wavefront calculated from the developed tool has the shape of nearly spherical wavefront and the maximum distortion is about 0.8 .A.. 8 .A..

• Proceedings of the KWS Conference
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• 2006.10a
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• pp.210-212
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• 2006

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1989.06a
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• pp.37-39
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• 1989

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2005.11a
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• pp.27-28
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• 2005

• Proceedings of the Optical Society of Korea Conference
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• 2009.10a
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• pp.251-252
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• 2009

• Proceedings of the Optical Society of Korea Conference
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• 2007.02a
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• pp.181-182
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• 2007

• Proceedings of the KWS Conference
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• 2003.11a
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• pp.30-32
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• 2003