what are common uses for laser diodes?
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Fiber optic Telecommunications. By the 1000's
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passive infrared detectors, solid-state cont actors, ultrasonic devices, and photosensitive controls at their disposal\n\n\n\nManual or automatic dimming equipment, which can respond to many inputs, allows the illumination of a space to be set at any desired level. The semiconductor used in a dimmer circuit is called a triac. The triac provides phase control, meaning that it regulates the current to the lighting load by only conducing during a selected part of the AC power cycle.\n\nIncandescent dimming devices include wall box-type units rated as high as 2,000W that can fit in a single-gang electrical device box. Some models allow dimming from two or more locations, which previously required a remotely controlled dimmer module.\n\n\n\nfor any further clarification, you can mail me
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In analytical chemistry, lasers have many uses.  Some uses are:\n\n1. Laser-induced fluorescence for detection in capillary electrophoresis, including the use of ultraviolet, continuous-wave lasers in combination with wavelength-resolved emission detection; the use of diode laser-induced fluorescence in the red region of the electromagnetic spectrum and the use of Ti:sapphire lasers for multiphoton-excited fluorescence detection. \n\n2. Degenerate four-wave mixing for detection in liquid microseparation systems (based on the coherence of laser light). \n\n3. Fluorescence line-narrowing spectroscopy for identification purposes, a cryogenic high-resolution molecular fluorescence technique with a high potential in environmental analysis. \n\n4. Recent developments in Raman spectroscopy (including ultraviolet-Resonance Raman and hyphenation of liquid chromatography and Raman spectroscopy). \n\n5. Use of lasers for sample introduction in inorganic analysis based on controlled material ablation\n\n6. laser-enhanced ionization (LEI)-a unique tool for analytical atomic spectrometry. LEI possesses the special ability to ionize atoms selectively.\n\nThere are probably more uses, but this is what comes to mind.
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A Laser jammer uses a infra-red LEDs or laser diodes to distort the signal of the police lidar gun.\n\nA great place to find out about laser jamming products results would be to go to the websites I linked below: http://guysoflidar.com/index.html\nhttp://guysoflidar.com/radar-detector-laser-jammer-shootout-2005/laser-jammer-tests.html\nhttp://guysoflidar.com/laser-jammer-test-july-2005/index.html\nRocky Mountain Radar products do NOT work!\nhttp://www.radarjammer.com/\n\nYou can see some videos of Laser jammers and Laser stealth coating here:\nhttp://www.laserveil.com/cool%5Fvideos/
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There is some cleaners which you can use them.\n(Depends on your location, you should find equivalent stuff)\n\nIf you couldn't find a LCD cleaner, as usual you can use the stuffs are using for cleaning prescription eye glasses.
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Strobe pins come on many different IC packages, processors for one, they can be used for a great many things but mainly are used to sync two or more circuits together.
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hi there. may be I can help you a little bit. I am taking a class about III-V compound right now. so what I got is this technology is good as optoelectronic. where in elemental devices such as Sillicon is not that good, therefore usually we use III-V compund such as GaAs as laser diode or something that has connection with light emitting or light receiver. but this explanation is still too general. I think if I am not misunderstood that it has better reception for photon is because the EL2 (electrical Level2) deep level which is relatively very sensitive to light. hope this is help you a little bit.
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The invention of the laser, which stands for light amplification by stimulated emission of radiation, can be dated to 1958 with the publication of the scientific paper, Infrared and Optical Masers, by Arthur L. Schawlow, then a Bell Labs researcher, and Charles H. Townes, a consultant to Bell Labs. That paper, published in Physical Review, the journal of the American Physical Society
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LASER stands for Light Amplification by Stimulated Emission of Radiation.It is an optical source that emits photons.Laser light is typically near-monochromatic, i.e. consisting of a single wavelength, and emitted in a narrow beam.
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Semiconductors have different uses:\n1. an N-P junction diode can be used as a rectifier, ie, to convert AC to DC [partly or fully] using the tranmission capabilities of transmission in forward & reverse biased situations\n2. an N-P-N or P-N-P triode can be used for rectification with amplification\n3. Doped semiconductors can also be used to construct logic gates in microelectronic devices.
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In order to get a lasing effect, you need to generate a population inversion.  Most orginary light sources (except LED's) would not be good sources of stimulated emission, but could be used to pump another material that could achieve population inversion.  This material would be called the gain medium.\n\nAlmost any transparent-ish material could possibly be made to lase (provide stimulated emission) if pumped hard enough.  I've heard of people making jello lasers and vodka lasers, for example.  These materials require a huge amount of pump (input) light and would not produce much stimulated emission.  That is why we don't use them as laser materials.  Common laser materials include CO2, Helium-Neon, Ruby, Ti:Sapphire, Nd:YAG to name a few.
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You could try a search on Google using "liquid lasers."\n\nSolid state, semiconductor, and gas lasers are more common than liquid lasers.\n\nMost liquid lasers are made with an organic dye - a kind of phosphorescent material suspended in a liquid.  Commercially available liquid lasers are usually called dye lasers, but not all dye lasers are liquid.\n\nFrequently liquid dye lasers are excited by a flashlamp.\n\nThe advantage of a liquid dye laser is that the output wavelength is "tunable," that is, you can select over a broad range what the output wavelength will be.\n\nI'll give a link in Sources to a recent article co-written by a friend of mine, Dave Titterton, who is a world renown expert in this field.  Go to link and click on the article called "From flashlamp-pumped Liquid Lasers to Diode-Pumped Solid-State Dye Lasers."
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Laser interferometry may be what you are looking for
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20-1000mW is a huge range for power and cost will vary considerably.  You should also consider your other specifications (cw/pulsed, wavelength, beam stability, beam divergence) as these will vary from laser to laser.\n\nEdmund Optics (http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1341)\n20 mW green for $3.2k\n50 mW green for $5.0k\n\nThinkLasers (http://www.thinklasers.com/)\n30mw-300mW green for $595-$2250\n150mW-250mW blue for $3470-$7650
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A laser (from the acronym Light Amplification by Stimulated Emission of Radiation) is an optical source that emits photons in a coherent beam. The verb to lase means "to produce coherent light" or possibly "to cut or otherwise treat with coherent light", and is a back-formation of the term laser.\n\nLaser light is typically near-monochromatic, i.e. consisting of a single wavelength or color, and emitted in a narrow beam. This is in contrast to common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths.
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The head is a Class 1 laser diode fed by a constant current source of typically 20-50mA.  The beam is focused onto the CD surface and reflected back onto a photodiode with a risetime of 10nS or better.  The digital output signal is fed to a decoder and then to an amplifier.\n\nConcerning drives, the disc is spun at a constant speed by a pulse-feedback servomechanism.  The head travels radially much like the head on a harddisk.
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Uses of praseodymium:\n\nAs an alloying agent with magnesium to create high-strength metals that are used in aircraft engines. \nPraseodymium forms the core of carbon arc lights which are used in the motion picture industry for studio lighting and projector lights. \nPraseodymium compounds are used to give glasses and enamels a yellow color. \nPraseodymium is a component of didymium glass, which is used to make certain types of welder's and glass blower's goggles. \nDr. Matthew Sellars of the Laser Physics Centre at the Australian National University in Canberra, Australia slowed down a light pulse to a few hundred meters per second using praseodymium mixed with silicate crystal. \n\nApplications\nUses of neodymium include\n\nNeodymium is a component of didymium used for colouring glass to make welder's goggles. \nNeodymium colours glass in delicate shades ranging from pure violet through wine-red and warm grey. Light transmitted through such glass shows unusually sharp absorption bands; the glass is used in astronomical work to produce sharp bands by which spectral lines may be calibrated. Neodymium is also used to remove the green colour caused by iron contaminants from glass. \nNeodymium salts are used as a colourant for enamels. \nNeodymium is used in the strongest permanent magnets known - Nd2Fe14B. These magnets are cheaper, lighter, and stronger than samarium-cobalt magnets. Neodymium magnets appear in high-quality products such as microphones, professional loudspeakers, in-ear headphones and computer hard disks where low mass, small volume, or strong magnetic fields are required. \nProbably because of similarities to Ca2+, Nd3+ has been reported [1] to promote plant growth. Rare earth element compounds are frequently used in China as fertilizer. \nSize and strength of volcanic eruption can be predicted by scanning for neodymium isotopes. Small and large volcanic eruptions produce lava with different neodymium isotope composition. From the composition of isotopes, scientists predict how big the coming eruption will be, and use this information to warn residents of the intensity of the eruption. \nCertain transparent materials with a small concentration of neodymium ions can be used in lasers as gain media for infrared wavelengths (1054-1064 nm), e.g. Nd:YAG (yttrium aluminium garnet), Nd:YLF (yttrium lithium fluoride), Nd:YVO4 (yttrium orthvanadate), and Nd:glass. The current laser at the UK Atomic Weapons Establishment (AWE), the HELEN 1-TW neodymium-glass laser, can access the midpoints of pressure and temperature regions and is used to acquire data for modelling on how density, temperature and pressure interact inside warheads. HELEN can create plasmas of around 106 K, from which opacity and transmission of radiation are measured. \nNeodymium glass (Nd:Glass) solid-state lasers are used in extremely high power (terawatt scale), high energy (megajoules) multiple beam systems for inertial confinement fusion. Nd:Glass lasers are usually frequency tripled to the third harmonic at 351 nm in laser fusion