Beam shaping for cosmetic hair removal

Todd E. Lizotte; Tracie Tuttle

doi:10.1117/12.732140

12 September 2007 Beam shaping for cosmetic hair removal

Todd E. Lizotte, Tracie Tuttle

Proceedings Volume 6663, Laser Beam Shaping VIII; 66630K (2007) https://doi.org/10.1117/12.732140
Event: Photonic Devices + Applications, 2007, San Diego, California, United States

Abstract

Beam shaping has the potential to provide comfort to people who require or seek laser based cosmetic skin procedures. Of immediate interest is the procedure of aesthetic hair removal. Hair removal is performed using a variety of wavelengths from 480 to 1200 nm by means of filtered Xenon flash lamps (pulsed light) or 810 nm diode lasers. These wavelengths are considered the most efficient means available for hair removal applications, but current systems use simple reflector designs and plane filter windows to direct the light to the surface being exposed. Laser hair removal is achieved when these wavelengths at sufficient energy levels are applied to the epidermis. The laser energy is absorbed by the melanin (pigment) in the hair and hair follicle which in turn is transformed into heat. This heat creates the coagulation process, which causes the removal of the hair and prevents growth of new hair [1]. This paper outlines a technique of beam shaping that can be applied to a non-contact based hair removal system. Several features of the beam shaping technique including beam uniformity and heat dispersion across its operational treatment area will be analyzed. A beam shaper design and its fundamental testing will be discussed in detail.

Citation Download Citation

Todd E. Lizotte and Tracie Tuttle "Beam shaping for cosmetic hair removal", Proc. SPIE 6663, Laser Beam Shaping VIII, 66630K (12 September 2007); https://doi.org/10.1117/12.732140

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