laserbiz.blogspot.com
Laser Basic: CO2 Laser
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Saturday, May 12, 2007. The carbon dioxide laser (CO2 laser) was one of the earliest gas lasers to be developed (invented by Kumar Patel of Bell Labs in 1964[1]), and is still one of the most useful. Carbon dioxide lasers are the highest-power continuous wave lasers that are currently available. They are also quite efficient: the ratio of output power to pump power can be as large as 20%. Carbon dioxide (CO2) (around 10-20 %). Nitrogen (N2) (around 10-20%). Hydrogen (H2) and/or (Xe) (a few percent).
laserbiz.blogspot.com
Laser Basic: Laser
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Saturday, May 12, 2007. In physics, a laser. Is a device that emits light through a specific mechanism for which the term laser. Subscribe to: Post Comments (Atom). Highlight shade options for brunettes.
laserbiz.blogspot.com
Laser Basic: May 2007
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Saturday, May 12, 2007. There are several different types of lasers. The differences depend on the type of active medium used. The active medium can be:. Gas lasers use gas as the active medium. Excitation is achieved by a current flowing through a gas filled tube. These lasers can be continuous wave or pulsed. Examples of gas lasers are HeNe, Argon, and C02. These lasers can be used for welding and cutting, eye surgery and entertainment. From J. King. Labels: Types of Lasers. The active laser medium (la...
laserbiz.blogspot.com
Laser Basic: Laser diode
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Saturday, May 12, 2007. A laser diode is a laser where the active medium is a semiconductor similar to that found in a light-emitting diode. The most common and practical type of laser diode is formed from a p-n junction and powered by injected electrical current. These devices are sometimes referred to as injection laser diodes to distinguish them from optically pumped laser diodes, which are more easily produced in the laboratory. Applications of laser diodes. Applications where the ability to "generat...
shade-brunettes.blogspot.com
shade options for brunettes: Highlight shade options for brunettes
http://shade-brunettes.blogspot.com/2007/07/highlight-shade-options-for-brunettes.html
Shade options for brunettes. วันอาทิตย์ที่ 29 กรกฎาคม พ.ศ. 2550. Highlight shade options for brunettes. Highlight shade options for brunettes. Depending on factors such as their age and hairstyle, brunettes have a variety of color shades to choose from when highlighting their hair. Highlighting provides a change in appearance that is not too drastic, yet easily noticeable. When choosing the proper shade to highlight their hair, brunettes. For those younger brunettes. With shorter hair especially hair wit...
laserbiz.blogspot.com
Laser Basic: Types of Lasers
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Saturday, May 12, 2007. There are several different types of lasers. The differences depend on the type of active medium used. The active medium can be:. Gas lasers use gas as the active medium. Excitation is achieved by a current flowing through a gas filled tube. These lasers can be continuous wave or pulsed. Examples of gas lasers are HeNe, Argon, and C02. These lasers can be used for welding and cutting, eye surgery and entertainment. From J. King. Labels: Types of Lasers.
laserbiz.blogspot.com
Laser Basic: History Laser
http://laserbiz.blogspot.com/2007/05/history-laser.html
Saturday, May 12, 2007. In 1916, Albert Einstein. in his paper Strahlungs-Emission und -Absorption nach der Quantentheorie, laid the foundation for the invention of the laser and its predecessor, the maser, in a ground-breaking rederivation of Max Planck's law of radiation based on the concepts of probability coefficients (later to be termed 'Einstein coefficients') for the absorption, spontaneous and stimulated emission. The first page of Gordon Gould's laser notebook, in which he coined the acronym LAS...
laserbiz.blogspot.com
Laser Basic: Dye laser
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Saturday, May 12, 2007. The long-wavelength absorption band of laser dyes is attributed to the transition from the electronic ground state S0 to the first excited singlet state S1. The transition moment [ 1] for this process is typically very large, thus giving rise to an absorption band with an oscillator strength on the order of unity. The reverse process S1- S0 is responsible for the spontaneous emission known as fluorescence and for the stimulated emission in dye lasers.
laserbiz.blogspot.com
Laser Basic: Nd:YAG laser
http://laserbiz.blogspot.com/2007/05/solid-state-laser.html
Saturday, May 12, 2007. Nd:YAG (neodymium-doped yttrium aluminium garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, typically replaces yttrium in the crystal structure, since they are of similar size. Generally the crystalline host is doped with around 1% neodymium by weight. Slit lamp photo of Posterior capsular opacification visible few months after implantation of intraocular lens in eye, seen on retroillumination. Nd:YAG la...
shower-gel-recipes.blogspot.com
Shower gel recipes: Shower gel recipes
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วันอาทิตย์ที่ 29 กรกฎาคม พ.ศ. 2550. Learn how to make your own shower gels with these easy recipes. Shower gel recipes: Pear, apple and fruit scents. Do you find that commercial shower gels irritate your skin? Do you prefer to use products with natural ingredients? The basic ingredients and recipes for making a natural shower gel are as follows. 1 De-ionized or distilled water or even straight from the tap is fine especially if you are going to use the product immediately and not store it for later use.
