Read e-book online Lasers for medical applications: Diagnostics, therapy and PDF

By Helena Jelínková

ISBN-10: 0857092375

ISBN-13: 9780857092373

Lasers became an imperative scientific software and new suggestions and coverings concerning them are being pioneered forever. The editor and participants commence through the reaction of tissue to laser mild. They then define the categories of lasers utilized in medication, together with solid-state, fuel, dye and semiconductor lasers and speak about using lasers for diagnostics, comparable to optical coherence tomography, laser spectroscopy in biomedicine and optical biopsy. the ultimate part is devoted to functions of lasers in treatment and surgical procedure, overlaying quite a few clinical fields together with dermatology, urology, gynecology, ophthalmology, dentistry and neurology and concludes with a glance at laser safety.

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Additional info for Lasers for medical applications: Diagnostics, therapy and surgery

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New possibilities offered by lasers in medical applications include the connection of various types of lasers with endoscopes, microscopes, or operating electro-coagulators. A prerequisite for the further development of laser systems in medicine is to deepen basic biological research into the interactions between lasers and living tissue at the cellular and molecular level. Sophisticated, highly manageable devices, along with better knowledge of the optical properties of tissue, will enable accurately determined destruction of pathological tissue and its treatment in the future.

He-Ne) (b) or excimer laser (c). 9 Continued. g. g. Rhodamine 6G laser) (e). (Used with permission from JENOPTIK Laser GmbH). 2 Laser resonator fundamentals The resonator can be constructed in a stable or unstable arrangement according to the direction of radiation from its mirrors after reflection (Hodgson and Weber, 2005; Siegman, 1986). The resonator configurations which are mostly used in the laser system are stable, meaning that they concentrate the wave after the reflection on the mirrors into the active medium placed inside the resonator.

16). In the case of a Q-switched regime the energy is stored inside the active material using a special shutter inserted inside the optical resonator, which decreases the quality factor Q and prevents the origin of the oscillation (for more details see Chapter 5). When the maximum possible stored energy is reached in the active medium, the shutter is released from the resonator, laser radiation is quickly amplified going through the laser resonator, and a very intensive so-called giant pulse is generated.

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Lasers for medical applications: Diagnostics, therapy and surgery by Helena Jelínková


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