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公开(公告)号：HK1021499A1
公开(公告)日：2000-06-16
申请号：HK00100521
申请日：2000-01-28
Applicant: IBM
Inventor： WYNNE JAMES JEFFREY , GOMORY STEPHEN HENRY , FELSENSTEIN JEROME MARVIN
Abstract: A laser system (called a UV Dermablator) and method that enables a clean, precise removal of skin while minimizing collateral damage to the skin underlying the treated region. The depth of ablation can be controlled via feedback from the physiology of the skin, namely the infusion of blood into the area of excision when skin has been ablated to a sufficient depth to produce bleeding. A second laser, such as a uv light source with a different wavelength, to penetrate the blood, heating it sufficiently to coagulate the blood. Other features provide precise control, permitting the epidermis to be removed down to the papillary dermis, following the undulations of the papillary dermis. This lateral and depth control may be accomplished by using careful observation, assisted by spectroscopic detection, to identify when the epidermis has been removed, exposing the underlying dermis, with spatial resolution appropriate for the spacing of the undulations of the papillary dermis. Yet other features which provide a feedback control mechanism which utilizes the optical characteristics such as the colour, appearance and remittance of the definable skin layers to control the depth of ablation at each location.
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公开(公告)号：DE2363065A1
公开(公告)日：1974-10-03
申请号：DE2363065
申请日：1973-12-19
Applicant: IBM
Inventor： HODGOSON RODNEY TREVOR , LANKARD JOHN ROBERT , SOROKIN PETER PITITINOVICH , WYNNE JAMES JEFFREY
Abstract: An infrared source producing a coherent output having a spectrally narrow and continuously tunable frequency is described. Such a source uses a four wave mixing process in an alkali metal vapor, wherein the initial input beams to the alkali metal vapor come from two dye lasers. In an alternative mode of operation, tunable ultraviolet output is obtained.
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