High Power Laser Pointer
To buy high power laser pointer from us, our laser pen with high reliablity, high stability, high efficiency and low noise.
Laser pointer, also known as laser pen, star pen, etc., is a pen-type transmitter that is designed to be portable, hand-held, and laser module or laser diode. Common laser indicators are red light (650-660 nm), green light (532 nm), blue light (445-450 nm), and blue-violet light (405 nm). It is usually used by newspapers, teaching, and tour guides to cast a light spot or a light pointing object. But it may damage or affect the place of the guide, such as art galleries and zoos.
The early laser pointer gas laser produced a laser wavelength of 633 nm. The cheapest laser pointer uses a deep red laser diode with a wavelength of nearly 670/650 nm . A slightly more expensive red, orange 635nm diode. Other colors are also possible, and the 532 nm green laser is the most common alternative. An orange-yellow laser pointer appeared at a wavelength of 593.5 nm. A 473nm blue laser pointer appeared in 2005 and was launched in September. In early 2010, a blue-violet laser pointer appeared at 405 nm.
● Red and orange
This is the simplest laser because there are red diodes. No more than one battery powered laser diode. The first red laser pointer released in the early 1980s sold for hundreds of dollars. Today, they are much smaller and generally cost less. Diode-pumped solid state (DPSS) 671 nm red lasers are common.
Yellow laser pointers are extremely rare on the market. The DPSS technique obtains two laser beams having a wavelength of 1064 nm and 1342 nm by adding a nonlinear crystal. The complexity of this process makes the yellow laser pointer unstable and inefficient. The output power varies from 1-10mW with temperature, and mode jump occurs if it is overheated or too cold. This is because the size of the laser pointer does not provide the required temperature stabilization and cooling components. In addition, most 593.5nm laser pointers operate in pulse mode to accommodate pump diodes of smaller size and power.
● Green light
The nonlinear crystal is excited by a wavelength of 808 nm infrared laser to generate 1064 nm infrared light, and then doudens to generate 532 nm green light, which belongs to a solid laser. Some green lasers operate in pulsed or quasi-continuous mode to reduce cooling and extend battery life. Green lasers that do not require multipliers are more efficient. Even low-power green light can be seen at night due to Rayleigh scattering of atmospheric molecules, which are often used by astronomy enthusiasts to point stars and constellations. The green laser pointer can have multiple output powers. 5mW is the safest to use and is also visible in darker lighting, so no more power is needed for pointing purposes.
● Blue light
Blue laser pointers such as 473 nm at specific wavelengths usually have the same infrastructure as green lasers. Many factories began producing blue laser modules in 2006, mass storage devices, and these used laser pointers. This is the type of device that is multiplying by semiconductor pumping. They most often emit 473 nm, which is a 946 nm diode-pumped laser radiation frequency doubling beam ND:YAG laser or yttrium vanadate crystal. The high output power BBO crystal is used as a lower frequency power for KTP crystals.
Some manufacturers are selling more than 1500 mW of measurement power parallel to the blue laser diode indicator. However, since the power of the "laser pen" product claims to include infrared power (only in semiconductor pumping technology) is still in the beam (for the reasons discussed below), the laser is still present based on the more stringent visual blue DPSS-type components. The problem is usually not applicable information. Due to the higher 钕 harmonics used, the frequency conversion efficiency is lower, and a small portion of the infrared power is optimally configured in the semiconductor pump module. The conversion of the 473 nm blue laser is usually 10-13%, about half. Typical of green lasers (20-30%).
The blue laser can also directly fabricate an indium gallium nitride semiconductor to produce a frequency-free blue light. There are (447 ± 5 nm) blue laser diodes on the market. This device is a violet laser diode with a light power of less than 405 nm, because the longer wavelength is closer to the peak sensitivity of the human eye. Large-scale production of laser projectors for commercial devices, such as laser diodes , drove prices down. The popular high-power (1W) 447 nm indicator, which also has better collimation and lower divergence, improves the optical version compared to the use of these portable devices with the associated intent and cost of the human hazard has reduced green light The competitiveness of laser wavelengths.
● Blue violet
A violet beam can be constructed to emit at 405 nm with a gallium nitride semiconductor laser. This is near-ultraviolet light, which is extremely close to human vision and can lead to bright blue fluorescence . In ordinary non- fluorescent materials, also on fog or dust, the color seems to be a dark purple shade that cannot be reproduced and printed. The GaN laser directly emits 405 nm without frequency, eliminating dangerous infrared accidents.