Why laser is red

This means blue laser beams can have a stronger focus or resolution. Because of its stronger focus, blue lasers are typically used in interferometers such as laser printers, compact discs, data recording, digital photofinishing, and DVD or CD players.

Now that you have the gist of why some lasers appear blue and some appear red, you can choose a laser pointer with the color that is most suitable for you. While red lasers are a safer option as mentioned, it can be used to play with your pets , other activities require a stronger and more visible laser.

It makes you wonder, what specific properties and functions do green lasers have that make it a better option than the red laser? As mentioned above, green lasers are more visible so it can be seen even at night.

Another thing worth mentioning is that green lasers use more energy. This means that it can travel further away in comparison to red lights. But just how far, you ask? Well, it can reach up to 9, feet away! You can probably infer that green lasers are more expensive to produce. With more visibility and energy, the materials and way it is made different from the red lasers.

First off, green lasers are more complex to create. Therefore, manufacturing requires more care and time to create. Besides, it also requires more space. Therefore, to create green lasers for other purposes other than for shooting, additional research has to be made. To be a fantastic shooter, you need to be accurate. Lasers are great tools to help you improve on this. These have to be very carefully aligned in order for the laser to function properly.

Because it takes lots of work to make a green laser, and because there is not much demand for green lasers, their cost is much higher right now than for a red laser. For a more complete description, see. Having different colors of laser light is neat because they have different properties. The small hand-held green lasers tend to look much brighter than similar red lasers.

Also, green light bends more than red when it enters a glass lens, for most typical glasses. If you are interested in looking at some specifications for different kinds of lasers and their uses, you can check out I hope this answers your question. No, the speed of light in a vacuum doesn't depend on the color i. The different colors will travel at slightly different speeds through materials such as glass.

Mike W. The light doesn't really have a temperature. The price of a laser depends not only on what color light it puts out but also how it generates it. For example, many old red lasers used tubes of mixed helium and neon gas. Those were moderately expensive to build. The high-power versions had big gas tubes and were quite expensive. Now you can get low-power red lasers almost the same wavelength of red using just solid-state diodes, much cheaper to build.

Heck, even other color laser pointers are taking advantage of this technology. The wavelength spectrum for green is around nanometers.

However, laser diodes are not commonly available in the spectrum of green light. Making things a little bit more complicated, green light is created by high power infrared laser diode. Some green pointers operate in quasi-continuous wave mode, which is to help extend battery life and reduce heat. Humans can more easily see the beam of a green laser than a red laser because the human eye is more sensitive at low light levels, which are levels in the green region of the light spectrum.

Currently, many astronomers use green laser pointers to indicate the locations of stars to people, as certain types of green pointers can be visible for thousands of feet. Green lasers that operate under milliwatts mW are powerful enough to light matches and pop balloons.

BLUE Blue is the up-and-coming color in the laser pointer world. The common wavelength is nanometers, and those blue pointers have a similar composition to their green counterparts. The wavelength for these pointers is nanometers. There are gas lasers and semiconductor laser diodes with blue beams.