Do you want to easily draw people's attention to the most important part of the presentation? This green laser pointer will help you! This powerful but very easy-to-use tool will take your presentation to the next level, especially during collaborative sessions or recordings. Are you ready to start using the laser pointer? Just need these simple steps! A laser pointer or laser pointer is a small handheld device with a power supply and a laser diode, which emits a very narrow coherent low-power visible light laser beam, designed to highlight its colored light by illuminating things of interest with small bright spots. In most jurisdictions, power is limited to no more than 5 milliwatts. A typical laser pointer has a small beam width and low power, so the beam itself is invisible in a fairly clean atmosphere, and only shows a spot when it hits an opaque surface. Some higher power laser pointers project visible light beams by scattering dust particles or water droplets along the beam path. Due to the Rayleigh scattering of air molecules, even in clean air, higher power and higher frequency green or blue lasers may produce visible light beams, especially when viewed under moderate to dim lighting conditions. When viewing these beams from an angle close to the beam axis, the intensity of this scattering increases.
Such pointers, especially in the range of green light output, are used as pointers to astronomical objects for teaching purposes. Recently, the low-cost availability of infrared diode laser modules with up to 1000 mW output has created a generation of green, blue, and violet infrared pumped frequency doubled laser pointers with higher visible light power, usually up to 300 mW. Because the infrared laser components in these visible high powered laser beams are difficult to filter out, and additional heat is generated after filtering, and this heat is difficult to dissipate in the small pocket "laser pointer" package, so it is usually left as a beam component in cheaper High-power pointer. At 405nm, the violet laser pointer emits a lavender beam very close to the ultraviolet range. It is less visible than red or green because it is very close to the ultraviolet (UV) range. The purple beam is at the far end of the visible light spectrum, so you don't need to use this purple laser pointer for light research. However, it is a shorter, higher-energy wavelength beam, and its energy is perfect for teaching and demonstrating everything about fluorescence, spectroscopy, and microscopy. This is a unique and attractive device suitable for all types of light/material science experiments.