When there is a coating between air and glass, some incident light reflects at the air/coating interface, and some light is transmitted and reflects at the coating/glass interface. The light that is reflected from the coating/glass interface travels twice through the thickness of the coating.

StarWalker – StarWalker’s VERSA3, FRAC3 and MaQX modalities provide effective tools for facial hair removal. In addition, StarWalker is also an industry-leading, ultra-performance tattoo and pigmented-lesions removal system thanks to its MaQX peak laser energy, four colors and proprietary FracTAT™ procedure.

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VSP (Variable Square Pulse) technology is a patented solution for generating square laser pulses for more controlled energy absorption. Pulse durations can be adjusted from 50 us up to 1500 us, depending on the practitioner’s needs. VSP pulse technology minimizes unnecessary laser energy absorption into body tissues and helps to ensure ultimate performance and patient comfort during laser treatments.

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Antireflection coatings can be improved by adding more layers. The materials and thicknesses used to make a highly efficient optical coating can be modelled with specialized software. Some coatings can have hundreds of layers and can reduce the reflection coefficient to less than 1% at specific wavelengths.

Nd:YAGlaserwavelength

Evaluation of a Long-Pulsed Nd:YAG Laser at Different Parameters: An Analysis of Both Fluence and Pulse Duration. Rogachefsky A, Becker K, Weiss G, Goldberg D. Dermatol. Surg. 28:10:October 2002. Read Abstract.

The success of hair reduction treatments depends largely on a patient’s skin and hair type, as well as the skills and treatment insight of the practitioner. Most patients can expect a significant reduction in unwanted hair, and any future hair growth will usually be thinner and lighter, and thus much less pronounced than before.

All Fotona Nd:YAG lasers are equipped with VSP (Variable Square Pulse) technology, enabling laser energy to penetrate deeply into the skin to create thermal effects without damaging the skin surface. Compared to conventional Nd:YAG technologies, Fotona’s proprietary VSP pulses create virtually instantaneous temperature increases that are limited to the targeted structures only; no unnecessary energy is deposited into the skin.

Epilation with Nd:YAG laser: a brief analysis of the technical application methods, results and pre- and post-treatment procedures. Cannarozzo G, Bonan P, Campolmi P. J Cosmetic & Laser Therapy. 2003; 5:189–191. Read Abstract.

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Fotona’s innovative FracTAT® technology, based on high-energy pulses of fractional Q-switched Nd:YAG laser, enables extremely high peak powers to be concentrated in a matrix of tiny spots, inducing fractional photoacoustic shockwaves below the tissue surface (non-ablative mode) or even micro-puncturing the tissue surface (ablative mode) when higher energies are used.

Antireflection coatings can get more efficient by taking advantage of the interference effects described by the wave theory of light to minimize the reflection of a particular set of wavelengths. These coatings induce interference effects by allowing the light to reflect and transmit in ways that would not happen on a bare substrate.

Fotona SP Line and XP Line lasers are ideal choices if you value speed for quick, high-quality aesthetic treatments without compromising efficacy. All Fotona SP and XP laser systems offer high performance, non-ablative long-pulse Nd:YAG and surgical QCW Nd:YAG lasers, which combine to offer an extremely wide aesthetics treatment range, including hair removal and many other applications in aesthetics and dermatology. The SP line also includes Er:YAG for resurfacing treatments and more.

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An everyday application of antireflective coatings is on corrective lenses to improve their aesthetics and to reduce the glare that the wearer can see. A more specialized application of an antireflection coating is on solar cells to reduce the reflection losses that reduce efficiency. Other applications include coatings on camera lenses and on some components used for optical experiments with lasers.

Fotona's innovative technologies and methods are protected by patents. Visit www.fotona.com/patents for more information.

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Fotona's high-performance Nd:YAG laser systems with FRAC3® technology have introduced new standards of efficiency in providing safe and effective hair reduction – using an innovative system that effectively targets hair follicles with a combination of selective and homogenous photothermolysis.

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This type of coating is an antireflection coating, and the optimum refractive index of the coating (nc) to minimize the total reflection coefficient is given by the geometric mean of the two materials that made up the original interface:

Scientific Evaluation of VSP Nd:YAG Lasers for Hair Removal.  Grad L, Sult T, Sult R. Journal of the Laser and Health Academy, Vol. 2007. No. 2. Read Full Text.

Nd:YAGlaserophthalmology

We offer a complete suite of analytical tools including SEM, EDX/Elemental Mapping, AFM, Ellipsometry and Large Area 2D / 3D Profilometry.

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All Fotona medical lasers are CE marked and cleared for sale in the EU. For countries where specific national approvals or clearances are required (for example by the FDA in the United States), some of the products and/or applications may not have been cleared yet. Similarly, local patents may limit usage for certain technologies and applications. Please check with Fotona, your local Fotona distributor or your national regulatory body to find out whether a specific product or application is available for sale and use in your country. If you are a US visitor please click here.

Additional Resources: visit the Laser and Health Academy* website for additional information about medical laser treatments that can be performed with Fotona laser systems.

Combined with the special high-performance S-11 scanner from Fotona, you can easily treat large areas such as the legs, back and chest quickly and efficiently, making laser treatments one of the most cost-effective solutions for long-term hair reduction. Fotona's high peak-power laser pulses provide the speed and efficiency needed to uniformly cover large scanning areas. Depending on the size of the treatment area, between three to five sessions, six to eight weeks apart will lead to a significant aesthetic and clinical result.

FRAC3® is a three-dimensional treatment effect that seeks out minuscule, age-related imperfections in skin tissue. With FRAC3® more surrounding tissue remains unaffected, ensuring faster healing and less patient downtime compared to conventional fractional treatments.

nd:yaglaserhair removal

Scanner Optimized Efficacy (SOE) Hair Removal with the VSP Nd:YAG Lasers. dr. Lukač M, Grad L, Nemeš K. Journal of the Laser and Health Academy, 2007 No. 3. Read Full Text.

The following Nd:YAG laser systems from Fotona are ideal for permanent hair reduction as well as many other aesthetic skin treatments:

* The Laser and Health Academy (LA&HA) is a not-for-profit organization dedicated to the advancement and education of lasers in medicine. The main intent of the LA&HA website is to facilitate an exchange of information on the views, research results, and clinical experiences within the medical laser community. The contents of the contributions on the LA&HA website may not in any circumstances be regarded as official product information by Fotona.

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Fotona’s Nd:YAG lasers incorporate revolutionary pulse-control technology and a proprietary three-dimensional treatment pattern (FRAC3®) to provide safe and effective hair reduction. Unlike other wavelengths, only Nd:YAG is safe to use on all skin types. Fotona’s innovative system effectively targets surface treatment areas while leaving surrounding tissues unaffected.

All of the required information can be found on the label at the back of your laser system: (make sure to type number zero - 0 instead of capital letter O)

Fotona's specially designed, innovative handpiece technology allows safe, precisely controlled and optimal delivery of laser pulses to the treatment area.

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In the case of air and glass, the optimum antireflective coating would have a refractive index of approximately 1.23. No real material has this ideal index, but magnesium fluoride (MgF2) is often used because its refractive index of 1.38 comes closest to the ideal value.

Antireflection coatings minimize the reflection of one or many wavelengths and are typically used on the surface of lenses so that less light is lost. A simple coating can be designed to minimize the reflection on an interface between two materials by providing an extra material for light to interact with. This can reduce the total reflection coefficient of the system by having light reflect from two interfaces where each interface has a smaller difference in refraction indices than the original interface.