(It can be fired)200mW 532nm High Power Green Beam Laser Pointer (1 x CR123 battery)

Coupon code:

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200mW 532nm High Power Green Beam Laser Pointer (1 x CR123 battery)

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(Vedio about a laser pointer )150mw 532nm High Power Open-back Green Laser Pointer with Keychain

150mw 532nm High Power Open-back Green Laser Pointer with Keychain

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coupon code: HZYSSValentine

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Among numerous green laser pointers, this 150mw 532nm Open-back Green Laser Pointer with Keychain stands out its class because of its high quality, powerful function and perfect design. This green laser pointer is made of high quality aluminum alloy material, durable enough for long term using. The max output of this flashlight can get 150mw. These laser pointers are powered by one included 10440 battery which can give out 532nm constant wave. With the keychain, you can easily hang it on your waist, easy to carry. The most interesting thing is that this green laser pointer can ignite matches without striking a blowing. The laser unit is constructed of machined aluminum with a flat black exterior finish. Several locations on the body are knurled to assist in gripping the laser. The laser looks nice from the outside. With a nice clicky switch, it is comfortable to press. Besides, our shipping is faster than other free shipping. Price is also reasonable, do not miss this laser!
Package Included:

• 1 x Green Laser Pointer with Keychain 
• 1 x 10440 Battery

Coupon code for Valentine's Day from laserpointerworld!

Here a romantic laser pointer for your Valentine's Day!

Coupon code:

HZYSSValentine

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You must be impressed by the pictures above. These beautiful pictures are the effect photos created by 5-in-1 50mw 405nm Open-back Star-projected Violet Purple Blue Laser Pointer Pen. This laser pointer is welcomed by many young men because of its different visual effect. The shell of this Violet Purple Blue laser pointer is made of high quality copper alloy material, durable and anti-shock. The max output of this laser pointer can reach 50mW. Powered by two AAA batteries, this laser pointer can give out a 405nm constant wave. The laser pointer is widely used in astronomy, exploring, and outdoor travel. You also can use this laser pointer to point at any desired targets on projection screens, video monitors, and presentation graphics without appearing in person. With the reasonable price, you should not miss this product!

Package Included:

• 1×50mW Violet Purple Blue Laser Pointer Pen
  2×AAA Batteries
  5×Pattern Caps( 5-in-1 )

(Cash coupon+free shipping) for this SuperFire 1200 Lumens LED Flashlight and battery with charger from laserpointerworld

Hello everyone , good news for flashlights and batteries fans ,here I’d like to offer a great cash discount for you.
Now you just need to pay $53.20 to get this flashlight.

SuperFire L2 SST-50 1200Lumens LED Flashlight (1*18650)

Regular Price: $126.40

 

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TrustFire 3.7V / 4.2V 880mAh TF16340 Battery 2 Pcs

 

with Double Charger

 

 

Regular Price: $38.46

 

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(An extra coupon code+free shipping) coupon code of laser pointers and flashlights for Valentine's Day!

1.Portal:Featured content from wikipedia.

From:
http://en.wikipedia.org/wiki/Portal:Featured_content

2.Valentine's Day is coming! Are you ready to buy some wonderful laser pointers or flashlights for someone you love . Come on , guys! Here we offer a an extra 10%off +free shipping for you before 10th,Feb 2012.
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 On Valentine's Day  you can present these kinds of gifts: diamonds, fine jewelry, dresses, handbags, accessories and more.  Just don't forget to add the chocolates and flowers!

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Current events from wikipedia

From
http://en.wikipedia.org/wiki/Portal:Current_events

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Powerful and reliable-this CREE LED flashlight is a must have! An outstanding value in a high quality super bright flashlight, this little UltraFire waterproof LED flashlight is one of the most impressive flashlights. Using advanced technology, this UltraFire waterproof LED flashlight produces amazingly bright light. This UltraFire brightest rechargeable LED flashlight can be owned for household using also can be purchased as gift for those who love outdoor sports like hiking, climbing and fishing, etc.
Package Included:

• 1 x UltraFire Flashlight
• 2 x 18650 Lithium Batteries
• 1 x Double Universal Battery Charger

Colors and wavelengths about laser pointers from wikipedia.org

S-KY 532nm 500mw Flashlight Handheld Pure Green Laser Pointer Pen P532-500( FDA Certified Power Guaranteed)

From:
http://en.wikipedia.org/wiki/Laser_pointer


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Colors and wavelengths about laser pointers

Green
Green laser pointers^[5] appeared on the market circa 2000, and are the most common type of DPSS lasers (also called DPSSFD for "diode pumped solid state frequency-doubled"). They are more complicated than standard red laser pointers, because laser diodes are not commonly available in this wavelength range. The green light is generated in an indirect process, beginning with a high-power (typically 100–300 mW) infrared AlGaAs laser diode operating at 808 nm. The 808 nm light pumps a crystal of neodymium-doped yttrium aluminum vanadate (Nd:YVO₄) (or Nd:YAG or less common Nd:YLF), which lases deeper in the infrared at 1064 nm. The vanadate crystal is coated on the diode side with a dielectric mirror that reflects at 808 nm and transmits at 1064 nm. The crystal is mounted on a copper block, acting as a heat sink; its 1064 nm output is fed into a crystal of potassium titanyl phosphate (KTP), mounted on a heat sink in the laser cavity resonator. The orientation of the crystals must be matched, as they are both anisotropic and the Nd:YVO₄ outputs polarized light. This unit acts as a frequency doubler, and halves the wavelength to the desired 532 nm. The resonant cavity is terminated by a dielectric mirror that reflects at 1064 nm and transmits at 532 nm. An infrared filter behind the mirror removes IR radiation from the output beam (this may be omitted or inadequate in less-expensive "pointer-style" green lasers), and the assembly ends in a collimator lens.
Nd:YVO₄ is replacing Nd:YAG and Nd:YLF because of lower dependency on the exact parameters of the pump diode (therefore allowing for higher tolerances), wider absorption band, lower lasing threshold, higher slope efficiency, linear polarization of output light, and single mode output. For frequency doubling of higher power lasers, LBO is used instead of KTP. Newer lasers use a composite Nd:YVO₄/KTP crystal instead of two discrete ones.
Some green lasers operate in pulse or quasi-continuous wave (QCW) mode, to reduce cooling problems and prolong battery life.
The recent announcement^[6] of a direct green laser (not requiring doubling) promises much higher efficiencies and could foster the development of new color video projectors.
Because even a low-powered green laser is visible at night through Rayleigh scattering from air molecules, this type of pointer is used by astronomers to easily point out stars and constellations. Green laser pointers can come in a variety of different output powers. The 5 mW green laser pointers (class llla) are the safest to use, and anything more powerful is usually not necessary for pointing purposes since the beam is still visible in dark lighting conditions.^{[citation needed]}
Blue

Main article: Blue laser

Blue laser pointers usually have the same basic construction as DPSS green lasers. In 2006 many factories began production of blue laser modules for mass storage devices, and these were used in laser pointers too. These were DPSS type frequency-doubled devices. They most commonly emit a beam at 473 nm, which is produced by frequency doubling of 946 nm laser radiation from a diode-pumped Nd:YAG or Nd:YVO4 crystal (Nd-doped crystals usually produce a principal wavelength of 1064 nm, but with the proper reflective coating mirrors can be also made to lase at other "higher harmonic" non-principal neodymium wavelengths). For high output power BBO crystals are used as frequency doublers; for lower powers, KTP is used. The Japanese company Nichia controlled 80% of the blue laser diode market in 2006.^[7]
Some vendors are now selling blue laser pointers with claimed powers exceeding 1,500 mW. However, since the claimed-power of "laser pointer" products also includes the IR power still present in the beam (for reasons discussed below), comparisons on the basis of strictly visual-blue component from DPSS-type lasers remain problematic, and the information is often not available. Because of the higher neodymium harmonic used, and the lower efficiency of frequency-doubling conversion, the fraction of IR power converted to 473 nm blue laser light in optimally configured DPSS modules is typically 10–13%, about half that typical for green lasers (20–30%).^[8]
Blue lasers can also be fabricated directly with InGaN semiconductors, which produce blue light without frequency-doubling. 450 nm blue laser diodes are currently available on the open market. The devices are brighter for the same power than 405 nm violet laser diodes, since the longer wavelength is closer to the peak sensitivity of the human eye. Mass production of laser diodes for commercial devices like laser projectors have driven down prices.
Red and red-orange
These are the simplest pointers, as laser diodes are available in these wavelengths. The pointer is no more than a battery-powered laser diode. The first red laser pointers released in the early 1980s were large, unwieldy devices that sold for hundreds of dollars.^[4] Today, they are much smaller and generally cost very little. In recent years,^[when?] diode-pumped solid-state (DPSS) red laser pointers emitting at 671 nm became available. Although this wavelength can be obtained directly with an inexpensive laser diode, higher beam quality and narrower spectral bandwidth are achieved through DPSS

 Violet

Main article: Blue laser

Lasers emitting a violet light beam at 405 nm may be constructed with GaN (gallium nitride) semiconductors. This is close to ultraviolet, bordering on the very extreme of human vision, and can cause bright blue fluorescence, and thus a blue rather than violet spot, on many white surfaces, including white clothing, white paper, and projection screens, due to the widespread use of optical brighteners in the manufacture of products intended to appear brilliantly white. On ordinary non-fluorescent materials, and also on fog or dust, the color appears as a shade of deep violet that cannot be reproduced on monitors and print. A GaN laser emits 405 nm directly without a frequency doubler, eliminating the possibility of accidental dangerous infrared emission^{[citation needed]}. These laser diodes are mass-produced for the reading and writing of data in Blu-ray drives (although the light emitted by the diodes is not blue, but distinctly violet). As of September 2011^[update], 405 nm blue-violet laser diode modules with an optical power of 250 mW, based on GaN violet laser diodes made for Blu-ray disc readers, had reached the market from Chinese sources for prices of about US$60 including delivery.^[9]
At the same time, a few higher-powered (120 mW) 404–405 nm "violet" laser pointers have become available which are not based on GaN, but use DPSS frequency-doubler technology from 1 watt 808 nm GaAlAs infrared diode lasers. As with infrared-driven green laser pointers above, such devices are able to pop balloons and light matches, but this is as a result of an unfiltered high-power infrared component in the beam.^[10] See the section on hazards below, for the difficulties with frequency-doubled IR-pumped lasers.