This book summarizes a five year research project, as well as subsequent results regarding high power diode laser systems and their application in materials processing. The text explores the entire chain of technology, from the semiconductor technology, through cooling mounting and assembly, beam shaping and system technology, to applications in the processing of such materials as metals and polymers. Includes theoretical models, a range of important parameters and practical tips. Author: Bachmann, Friedrich/ Loosen, Peter/ Poprawe, Reinhart Series Title: Springer Series in Optical Sciences Series Number: 128 Binding Type: Paperback Number of Pages: 560 Publication Date: 2010/11/29 Language: English Dimensions: 9.21 x 6.14 x 1.14 inches
In this book, the design of InGaN LDs structures including multi quantum wells (MQWs) active region device are described and investigated by integrated system engineering technology computer aided design (ISE TCAD) device simulator. The parameters of the LDs structures are varied and optimized for high performance. This optimization study involves aspects such as thickness of active region, doping, thickness of stopper layer region, thickness of quantum wells and quantum barriers, number of quantum wells and several approaches to improve and achieve high efficiency, low threshold current and high output power of InGaN LDs. The basic LDs structures treated here are FabryPerot type InGaN double heterostructure (DH), separate confinement heterostructure (SCH) and multi quantum wells (MQWs).High performance LD has been obtained by using multi quantum wells incorporated with the optimized parameters. The lowest threshold current, higher external quantum efficiency and characteristic temperature are obtained when the number of InGaN well layers is two, at our laser emission wavelength of 415 nm, which is related to the problem of inhomogeneous carrier. Author: Thahab, Sabah Binding Type: Paperback Number of Pages: 232 Publication Date: 2011/01/31 Language: English Dimensions: 5.98 x 9.00 x 0.53 inches
The Chauvet Eclipse LED Laser Effect Light adds an exciting red and green laser star field to a deep blue, high-power LED aura effect. The Eclipse light's independently controllable lasers with fully dimmable LED illumination create an awe-inspiring look that is equally effective with or without fog.Combines LED and laser in one effectSeparate control of laser effect and LED: Laser: rotation direction and speed, separate red and green strobe rates or full on; LED: rotation direction and speed, electronic dimmer (0 - 100%)High-power, 5W (1,000mA) LEDCoverage angle: 120ðLight source (laser): 532nm/30mW green laser diode, 650nm/80mW red laser diodeLight source (LED): 1 deep blue (450nm) LEDWeight: 3.6 lb.Dimensions: 6.4" H x 7.9" W x 9.3" D
Okay, just about everyone has a red laser pointer. Heck, we even sell a fine one here at ThinkGeek. But, we're pretty sure you want to be a superior geek - and doing it with a green laser is the way to go. This pointer is significantly brighter (about 50 times) than a red laser pointer and because of its unusual color it is much more noticeable. I mean come on, a 532 nm green laser wavelength is obviously superior to a laughable 650 nm red laser wavelength. And unlike a red laser, the green beam itself can be seen in mid-air in dark conditions, not just the laser beam dot. This allows the green laser pointer to be used for pointing to star constellations (skypointing) and also just generally look cool as hell. The green laser beam dot can be seen at much greater distances than with a red laser pointer. Since green direct injection laser diodes aren't readily available, this pointer is based on the use of Diode Pumped Solid State Frequency Doubled (DPSSFD) laser technology. A high power IR laser diode at 808 nm pumps a tiny block of Nd:YVO4 generating light at 1,064 nm which feeds a KTP intracavity frequency doubler crystal to produce the green beam at 532 nm. Features of this unit include: Very bright green laser at 532 nm wavelength Output power of Range of approximately 9,000 ft (2600 m) in darkness 1.1 mm beam diameter at source Momentary push button switch Solid, heavy duty construction Constant wave output (as opposed to pulse output) Takes 2 "AAA" batteries (not included) Can be used for skypointing, projection on low clouds, signaling, highlighting potential explosives Dimensions: 5.6" x .5" dia 90-day warranty Available in Black or Silver color Interested in quantity discounts or custom logo imprinting? More info here. Warning: Green lasers are very powerful. Pointing at aircraft may land you in jail. Without a Monopoly card to get you back out. Use it wisely.
This book basically gives the over view about The properties of erbiumdoped fiber amplifier (EDFA) such as gain and noise figure have been studied. By determining the characteristics of the 980nm, 1480nm 1550nm laser sources and ASE (amplified spontaneous emission) at the output of the amplifier used to determine the gain and noise figure of EDFA. This model allows to follow the signal (1550nm), pump (980nm) and ASE as they propagate along the fiber and determine population inversion .The both forward and backward propagation ASE are important in determining the overall gain and noise figure. For the amplification of more than 80 channels the DWDM (Dense Wavelength Division Multiplexing) has required CBand (15251565)nm and LBand (15651610)nm EDFA.We show that a flat gain spectrum can be achieved in the range from 1565 to 1610 nm when the EDF length, pump power and pump configuration are appropriately chosen. Special care must be taken when selecting the EDF length. Author: Kumar, Pankaj/ Kumar, Chakresh/ Chack, Devendra Binding Type: Paperback Number of Pages: 68 Publication Date: 2011/06/19 Language: English Dimensions: 9.02 x 5.98 x 0.16 inches
The Chauvet Eclipse LED Laser Effect Light adds an exciting red and green laser star field to a deep blue, high-power LED aura effect. The Eclipse light's independently controllable lasers with fully dimmable LED illumination create an awe-inspiring look that is equally effective with or without fog.Combines LED and laser in one effectSeparate control of laser effect and LED: Laser: rotation direction and speed, separate red and green strobe rates or full on; LED: rotation direction and speed, electronic dimmer (0 - 100%)High-power, 5W (1,000mA) LEDCoverage angle: 120Light source (laser): 532nm/30mW green laser diode, 650nm/80mW red laser diodeLight source (LED): 1 deep blue (450nm) LEDWeight: 3.6 lb.Dimensions: 6.4" H x 7.9" W x 9.3" D
Description:High quality Red Laser Pointer!Laser Pointer Diode BeamWavelength: 650nmMax output: 5mW1 Red Laser pointer pen BeamPressure button for Laser BeamVisibility: Over 1 mile ( AVOID DIRECT EYE EXPOSURE)Output Mode: Constant WaveLaser Pen powered by 2AAA batteries(not included).Use your Laser Pointer to point at any desired targets, project screens, or video monitors, presentations and inspection.Best choice of gifCautions: Avoid direct eye exposure to laser beamSize: 135mm (L) x 11mm (D)Weight: 31g
Description:100% Brand New high quality Red Laser Pointer!Laser Pointer Diode Beam1 Red Laser Pointer pen BeamPressure button for Laser BeamVisibility: Over 1 mile ( AVOID DIRECT EYE EXPOSURE)Output Mode: Constant WaveLaser Pen powered by 2AAA batteries(not included).Use your Laser Pointer to point at any desired targets, project screens, or video monitors, presentations and inspection.Best choice of gift.Cautions: Avoid direct eye exposure to laser beamSize: 135mm (L) x 11mm (D)Weight: 20g
Description:100% Brand New high quality red laser pointer!Red pen Laser pointer Diode BeamSize: 135mm (L) x 8mm (D)Weight: 47gColor: Dark BlueWavelength: 650nmMax output: 5mW1 Red Laser pointer pen BeamPressure button for Laser BeamVisibility: Over 1 mile ( AVOID DIRECT EYE EXPOSURE)Output Mode: Constant WaveBatteries Type: AAA 1.5V x 2pcs Alkaline Batteries (not included)Useful Kit for Handy Torch, Office/School Presentation, etc.Best choice of gift.Cautions: Avoid direct eye exposure to laser beam
Many people have a red laser pointer and some really cool people have the green laser pointer. But very few people have them both built into a single unit. Being the cutting edge geek that you are, we know you'll choose this dual output beauty. Why would you want to be like everybody else? The first laser pointer that projects a brilliant GREEN beam from one end and also a high-power RED beam. The GREEN beam is just as bright as other green pointers, range up to 2 miles in darkness, wavelength 532 nm. The green laser beam (not just the dot) is visible at night. The RED beam is the most powerful red laser allowed by the FDA, range 4000 ft in darkness. Power output Green Laser Specifications Output Mode - Constant wave Wavelength - 532 nm Batteries: 2 x AAA (included) Beam Dia. at Source - 1 mm Output Variance - 10% after 20 min. Body Color - Silver Beam Divergence - 1.2 mRad Output Power - Switch - Push Button Operating Lifetime - 2000 hours Class - IIIa Range 10,000 ft (3000m) in darkness Red Laser Specifications Wavelength - 650 nm Polarization - Linear (50:1) Batteries: 2 x AAA Beam Dia. at Source - 1 mm Output Variance - 5% after 20 min. Body Color - Silver Beam Divergence - 1.2 mRad Output Power - Switch - Push Button Operating Lifetime - 5000 hours Class - IIIa Range 4,000 ft (1300m) in darkness Dimensions - 6.8 in. long, 0.55 in. dia.
Enterococc faecalis considered to be the mostresistant bacteria of the root canal, in the presentstudy we used two types of root canal disinfectant toshow their effect on this type of bacteria, the firstis the diode laser and the second NaOCl solution withspecial concentrations and times. the study conductedon human decoronated extracted teeth, adjusted with13mm root length, filled with a suspension of E.faecalis, Samples were divided into 14 groups eachgroup consisted of 10 prepared roots, sixty sampleswere irrigated with NaOCl solution at differentconcentrations (0.5, 2.5 and 5.25) at twoselected times (2 minutes and 5 minutes) for eachconcentration.Sixty samples were irradiated at different powers (2W, 2.5W and 3W); each power at thetotal irradiation time 30 and 60 seconds. Whencomparison was made between NaOCl irrigant and diodelaser in a combination among differentconcentrations, powers and times the result showedthat 5.25 NaOCl at both 2 minutes and 5 minutes hadthe highest antimicrobial effect with no significantdifferences from 3W laser / 10 sec (6 cycles) butsignificantly different from 3W / 5 sec (6 cycles). Author: Shehab, Najwan F./ Zakaria, Assistant Prof Nawfal a./ Taha, Prof Dr Mahmoud y. Binding Type: Paperback Number of Pages: 104 Publication Date: 2011/07/29 Language: English Dimensions: 9.02 x 5.98 x 0.25 inches
Dime Used to Illustrate Miniature Size of the Diode of an Injection Laser Premium Photographic Print by . Product size approximately 12 x 16 inches. Available at Art.com. Embrace your Space - your source for high quality fine art posters and prints.
Chauvet Min Laser Star Features: Pint-sized green star and red beam laser projector for use in small parties that need big coverage Independent control of the red and green laser diodes allow for true customization of the effect Covers a huge area and looks great with or without fog Set the color and rotation speeds wirelessly with the included wireless remote control Motor spins in both directions and at variable speeds to create an ever-changing star field Includes 2 different mounting options to fit the style and mood of any event or party Awesome sound-activated and automated programs dance to the beat of the music or run by them selves Complies with FDA / CDRH standards for Class 3R Specifications: Light source: 532nm/50mW green laser diode, 650nm/100mW red laser diode Coverage angle: 100° Power and current: 120V, 60Hz: 5W, <0.1A operating, <0.1A inrush Power and current: 230V, 50Hz: 5W, <0.1A operating, <0.1A inrush AC power: 12VDC 500mA (external power supply: 100-240VAC 50/60Hz) Weight: 0.7lbs (0.3kg) Size: 4.3 x 3.3 x 1.8in (111 x 85 x 45mm) Get Your Chauvet Min Laser Star Today!
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250mW RED LASER POWER, VOLUNTEER SERIES
Rosacea Laser Treatment Method
Rosacea laser treatment method includes high power light beam for curing the affected blood vessels. The light beam is focused directly on the damaged blood cells for efficient flushing. The technique has been approved by United States Food and Drug Administration and is one of the best treatment methods available nowadays. The treatment may include more than one two-three rounds of exposure, but with each round the effects of disease start declining. The cost per visit varies across places and one may have to shell as high as $500 for a single treatment session.
Pulsed Dye Laser is one of the most common techniques used and has shown nearly 80% success rate in removal of redness and flushing of blood vessels. In addition KTP , Diode and Nd:YAG lasers have also been developed in the recent times. However, they use a very intense and powerful beam which can lead to skin thickening and swelling so CO2 is used to remove the skin thickening. Results have shown a 40-60% reduction in the skin redness, burning, itching and dryness in just 2-3 rounds of laser exposure. However, the permanent effects of the treatment technique are only visible after a period of 4-5 months.
The method uses strong beam which can cause serious damage to the skin cells. It may cause temporary swelling on the face and the process can be uncomfortable at times. In severe cases, it can also cause the mutation of cells ultimately leading to the creation of cancerous cells. A new class of light treatment methods called Intense Pulsed light (IPL) is also used by some doctors and uses high density beam from a light source which is less dangerous. However, it require 5-7 rounds, but with the reduced harmful effects it can be beneficial against laser treatment methods for Rosacea.
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