Blue Lasers Diodes looking for blu ray laser diode.?
im looking for a blue ray laser diode for very cheap i don't care about power or anything like that i just want a blue ray laser i can make one if i can do it for under $50 if you tell me how to make one with a driver that will protect it and make it last i will give you best answer.
got a Playstation Blu-Ray reader assembly off of eBay for $45 and got the diode from there. He uses a 9v battery for power, with a 150-ohm resistor for protection. Read how he got the diode out from that website. Good luck.
In this book, I have optimized the growth of n and pGaN films, and high quality InGaN/GaN multiple quantum wells (MQWs) on sapphire (0001) substrate by a low pressure metalorganic chemical vapour deposition and have fabricated high brightness InGaN/GaN MQW lightemitting diodes (LEDs) under optimum conditions. To improve quantum efficiency which is generally poor in the conventional rectangularshaped QWs due to spatial indirect recombination induced by internal piezoelectric field, we proposed a possibility of quantum dot (QD) engineering with triangularshaped band structure in the InGaN/GaN QWs. The structural and optical properties of the InGaN/GaN MQWs with different threading dislocation densities were also investigated. The effects of Sidoped nGaN and Mgdoped pGaN layers on the electrical and optical properties of the InGaN/GaN MQW LEDs were investigated and optimized under various growth parameters. Author: Choi, RakJun/ Hahn, YoonBong/ Lee, HyungJae Binding Type: Paperback Number of Pages: 156 Publication Date: 2010/06/23 Language: English Dimensions: 5.98 x 9.01 x 0.36 inches
High Quality Content by WIKIPEDIA articles The Diodes were a Canadian punk/new wave band formed in 1976. They released five albums: Diodes (1977), Released (1979), ActionReaction (1980), Survivors (1982), and Time/Damage Live 1978 (2010). One of the first Toronto bands playing that style of music, The Diodes helped foster the scene in the city. Along with manager Ralph Alfonso, The Diodes opened the first Canadian punk nightclub in 1977, called Crash n Burn, where many of the citys punk bands at that time played. The first band to play the club was The Nerves, on a double bill with The Diodes. The club was closed at the end of the summer of 1977 due to complaints by the Liberal Party of Ontario (the principal tenants of the building). Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 130 Publication Date: 2010/08/01 Language: English Dimensions: 6.00 x 9.02 x 0.31 inches
The introduction of innovative light sources, fibre laser sources and light emitting diodes, is opening unexpected perspectives into optical techniques and is promising new exciting applications in the field of biomedicine. Lasers and Current Optical Techniques in Biology aims to provide an overview of light sources, together with an extensive and authoritative description of the optical techniques in biomedicine. This book is designed to give biomedical researchers a strong feel for the capability of physical approaches, promote new interdisciplinary interests and persuade more practitioners to take advantage of optical techniques. Current developments in a variety of optical techniques, including NearInfra Red Spectroscopy, and traditional and advanced fluorescence techniques are covered, ranging from those that are becoming common practice to those that need much more experimentation before they can be accepted as real breakthroughs. Further topics include optical coherence tomography and its variations, polarised light imaging and, principle laser and lamp sources a usually fragmentary topic, often dispersed among specialist publications. The wide range of topics covered make Lasers and Current Optical Techniques in Biology of interest to a diverse range of scientific communities. Author: Palumbo, Giuseppe/ Pratesi, Riccardo Series Title: Comprehensive Series in Photochemistry and Photobiology Series Number: 4 Binding Type: Hardcover Number of Pages: 658 Publication Date: 2005/01/01 Language: English Dimensions: 9.47 x 6.45 x 1.24 inches
Chaotic semiconductor laser diodes can be used to precipitate secure communications schemes via synchronisation of two such lasers. This book begins by extending the bifurcation analysis of Dubbeldam and Krauskopf to dimensionless equations derived from the Yamada model with terms representative of spontaneous emission and diffusion effects included. We show that the bifurcation diagram changes dramatically at a certain diffusion level, but that the region of selfpulsation is still delineated by the Hopf bifurcation curve. Other models which include recombination effects are also considered. The excitable region of the parameter space of the dimensionless equations derived from the Yamada model with diffusion effects neglected is considered, and approximations of the excitability threshold are derived. Finally, chaotic behaviour arising from sinusoidal modulation of the pump current is analysed. Lyapunov exponent calculations are supplemented with a return map analysis in order to distinguish between periodic motion and chaos as the modulation depth and frequency are varied. Author: Walker, Ricki Binding Type: Paperback Number of Pages: 236 Publication Date: 2009/04/01 Language: English Dimensions: 9.00 x 6.00 x 0.54 inches
Lasers are now part of our lives in many ways. They are in our computer printers and compact disc players, they record prices at the supermarket check out, they light up rock concerts, and they guide weapons and measure distances between planes, and now they are beginning to blaze a new trial in dentistry. The need to integrate new technology into our daily activities has become a key factor to success is an increasingly demanding business market. The scientific methods and artistic details prescribed for reconstructive dentistry are well documented. The addition of laser to reconstructive process can heighten the art and science of this multidisciplinary field. The current use of lasers in reconstructive dentistry fixed, removable, implant, maxillofacial prosthesis] encompasses a wide variety of soft and hard tissue procedures. Author: R, Murali/ Jayesh, Raghavendra Binding Type: Paperback Number of Pages: 172 Publication Date: 2010/10/19 Language: English Dimensions: 6.00 x 9.02 x 0.40 inches
Among the many intense light sources, excimer lasers have a unique set of properties that place them at the forefront of tooling for material processing. Their extreme versatility means that they can be used in many areas of materials science and medicine. But three conditions need to be fulfilled in order that their versatility be truly appreciated and exploited: the characteristics and limitations of the sources must be known; the basic excimer laser processes should become reasonably widely known; and problems in search of a solution should be clearly identified. Excimer Lasers covers all three of these points in an instructive and logical way. Probably for the first time, both instrumental and fundamental aspects of excimer laser interaction with matter are presented sidebyside, with examples drawn from the widest range of materials. The articles gathered here are tutorial in their nature, thus making them suitable for a wide readership, from recent graduates and postgraduate students to those established scientists entering the field, all of whom could not find a better, nor more authoritative work with which to start their reading. Author: Laude, Lucien D./ Laude, L. D. Series Title: Developments in Hydrobiology Series Number: 265 Binding Type: Hardcover Number of Pages: 512 Publication Date: 1994/04/30 Language: English Dimensions: 9.21 x 6.14 x 1.19 inches
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DIY: How to Make a High Powered Burning Blue/Violet Laser Pointer
What would it take to make a white laser?
Red, then Green, now Blue....could one be made by collimating all those three colors, kind of like yellow lasers are made with red and green diodes?
Might there be some theoretical way to make a single white laser diode, kind of like the recent white LED breakthrough?
Actually, phase coherency is a side-effect that happens to be useful, but is not essential to lasers (though it is often desirable).
The basic idea behind a laser is: Light Amplification by Stimulated Emission of Radiation. It is possible for a medium to "lase" at several frequencies simultaneously - that is, to give off light at multiple frequencies when suitably pumped and stimulated. (Think of tunable dye lasers.)
However, for the resulting light to be "white", both the frequencies and their relative amplitudes have to be right.
Furthermore, most (but not all) lasers need a "resonant cavity" (this is where the mirrors come in). So not only must the lasing medium be just right, so must the cavity.
With so many constraints, designing and building a true white-light laser may well be impossible, and even if possible, is going to be very hard. Since hard means expensive, and there is little advantage to a white laser, I doubt there will be much effort in this area.
On the other hand, if what you want is a phony "white" laser - a beam that combines the output of three different lasers into one beam - that is done all the time.
Most modern fiber optic cables used for long distances are "wavelength-division multiplexed" which means multiple lasers pump their light and data into the same fiber. What come out the end is a mixture, which then gets separated. Nobody actually cares about the resulting color, so the frequencies and amplitudes aren't chosen to make "white", but they could be if the need arose.
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