What Is a Visible Laser?

Laser pointer, also known as laser pointer, stylus, etc., is a pen-type transmitter designed by visible lasers to be portable, easy to hold and processed by laser modules (diodes). Common laser pointers are red (650-660nm), green (532nm), blue (445-450nm), and blue-violet (405nm). It is usually used in conference papers, teaching, and tour guides to project a light point or a light pointing at an object, but it may damage or affect the place where the guide is, such as art museums (some paintings are afraid of light), zoos, etc Should not be used.

Laser pointer

Right!

Laser pointer, also known as laser pointer, stylus, etc., is a pen-type transmitter designed by visible lasers to be portable, easy to hold and processed by laser modules (diodes). Common laser pointers are red (650-660nm), green (532nm), blue (445-450nm), and blue-violet (405nm). It is usually used in conference papers, teaching, and tour guides to project a light point or a light pointing at an object, but it may damage or affect the place where the guide is, such as art museums (some paintings are afraid of light), zoos, etc. Should not be used.

Early laser pointer (helium-neon) helium-neon gas lasers produced lasers with a wavelength of 633 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 very little. Diode-pumped solid-state (DPSS) red lasers at 671nm are common.

yellow

Yellow laser pointers are extremely rare on the market. DPSS technology is obtained by adding two laser beams with a wavelength of 1064nm and 1342nm through a non-linear crystal. The complexity of this process makes the yellow laser pointer unstable and low in efficiency. The output power is 1-10mW as the temperature changes. If it is too hot or too cold, a mode jump will occur. 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 work in pulse mode in order to use pump diodes of smaller size and power.

Green light

Malicious use

Malicious use is extremely dangerous, especially for airplanes where pilots may

Power imaginary scale

1.30mW is labeled 200mW, 100mW is labeled 500mW.

2. The unit is marked as MW.

Power includes infrared

Most green lasers have no filters, which will cause infrared leakage, and the marked power does not match the actual green light power.

"Overclocked" laser

In some products, the laser tube is overclocked. Although it can achieve a large output power, it will accelerate with the use of power and LD will accelerate aging.