Over time, after successive absorption and spontaneous emission of photons, the matter in question is cooled. In 2004, excluding diode green laser pointer, approximately 131,000 lasers were sold worldwide, valued at $2.19 billion, and approximately 733 million diode lasers, valued at $3.2 billion. The fast-growing fiber laser market alone was worth $240 million in 2008 and is expected to reach $500 million in 2011.
In the long term, researchers are conducting nuclear physics research that could eventually lead to gamma-ray lasers to store nuclear energy, while the development of atomic lasers could lead to a range of new and potentially unforeseen applications. Laboratory laser systems can generate infrared, visible or ultraviolet light as needed, and even X-rays, in fact, for some lasers, the emission that is excited in the direction Einstein envisioned is only secondary. A laser pointer is an optical amplifier—a device that enhances light waves. Some laser pointers have well-directed, very bright beams with very specific colors; others emphasize different characteristics, such as extremely short pulses. The main feature is that magnification makes the light very clear and reproducible, unlike ordinary light sources such as the sun or lamps.
That is, it targets a total of 5 milliwatts of light on the lunar surface. In fact, it's a fairly low reflectivity surface, so most of the 5 mW is absorbed. But anyway... let's say our astronauts found a perfect white spot. So now you have a red dot on the moon shining at all the intensity of your high power laser pointer beam. Laser pointers vary in many ways, but power output remains the most important consideration. High power levels, which can be measured in milliwatts (mW), result in more energetic beams.
