Wintry Weather Heading Our Way
News0 min ago
Laser Light
5 Answers
Can anyone tell me the 'default' colour of laser.....-Is it White or green?
Answers
1 to 5 of 5
Best Answer
No best answer has yet been selected by Matheous-2. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.
There isn't a default colour, it depends on which wavelength the laser is.
http://www.lexellaser...hinfo_wavelengths.htm
http://www.lexellaser...hinfo_wavelengths.htm
Incidently...
The lasers that most people have in their homes are in optical drives and the difference between the main types of optical drive is the wavelength of he laser used, the smaller the wavelength the smaller the "pits" in the disc that can be read which results in more data being stored on a disc of the same area...
CD use 780nm lasers so near infrared and a pit size of about 13um
DVDs use 650nm lasers, so visible red
Blu rays use 405nm lasers, so violet/near ultraviolet (hence the blu in the name)
The lasers that most people have in their homes are in optical drives and the difference between the main types of optical drive is the wavelength of he laser used, the smaller the wavelength the smaller the "pits" in the disc that can be read which results in more data being stored on a disc of the same area...
CD use 780nm lasers so near infrared and a pit size of about 13um
DVDs use 650nm lasers, so visible red
Blu rays use 405nm lasers, so violet/near ultraviolet (hence the blu in the name)
-- answer removed --
-- answer removed --
1 to 5 of 5
