An RGB laser is that beam source that emits red, green and blue lights in form of laser beams either as a separate beam for each color or a combination of all the three colors in one beam. Through the process of additive color mixing which is achieved through combination of these lights, a number of many other lights can be obtained.
RGB laser sources have proven to perform better than other arc lamps beam sources. While the later are normally cheaper sources of beams, they come with limited lifetime, poor image quality and impossibility of high wall-plug efficiency. This is particularly as a result of poor spatial coherence and availability of less color space, a result of which has seen a rapid rise in their demand.
These types of lasers achieve coherence of wavelengths, a reason why they outperform many other sources of beams. The coherence is on both time and space allowing for inferences. The consistency in the change of phase properties over a long distance results into high quality images that make them preferred for entertainment and other professional applications.
The red, green and blue colors produced by these sources normally have very narrow optical bandwidth making them similar to monochromatic ones. On mixing, the resulting images are normally very clear as other monochromatic sources of beams. It is not surprising that cathode tube displays, printers and even lamp-based beams are now made of them.
RGB sources however suffer from a major setback given that the power level that is emitted is usually of low level. Most cinema projectors for instance require up to 10 W per color or even more. This level of power sufficiency, maturity or even cost effectiveness is still beyond the existing RGB scanners. When it comes to beam quality, these machines have to operate with high quality beams for them to perform effectively.
External optical modulators are normally used in these types of beamers although RGB sources are fitted with power-modulators for better signals in situations where the optical modulator use is made impossible as a result of low power miniature devices. Laser diodes for instance are used to achieve modulation bandwidth between 10 to 100 megahertz or even much higher resolutions.
There are many methods of constructing RGB lasers. Three lasers with each emitting a particular light of a wanted color is for instance an approach that has been used for long. These visible light beams are however limited in performance as compared to those that are infrared based.
The use of infrared solid-state lasers involves application of a single laser that emits a beam of near infrared (invisible) nature. Such a beam then undergoes through several stages of nonlinear frequency conversion the end of which a three colored beam is produced. The other methods that have also been used to obtain these colors are the combination of parametric oscillators, the use of frequency doublers and the use of frequency mixers.
Technological advancements opens windows for development of a better RGB laser that is capable of overcoming most of the challenges associated with the existing ones. With this possibility, these lasers are predicted to replace all other forms of lasers.
RGB laser sources have proven to perform better than other arc lamps beam sources. While the later are normally cheaper sources of beams, they come with limited lifetime, poor image quality and impossibility of high wall-plug efficiency. This is particularly as a result of poor spatial coherence and availability of less color space, a result of which has seen a rapid rise in their demand.
These types of lasers achieve coherence of wavelengths, a reason why they outperform many other sources of beams. The coherence is on both time and space allowing for inferences. The consistency in the change of phase properties over a long distance results into high quality images that make them preferred for entertainment and other professional applications.
The red, green and blue colors produced by these sources normally have very narrow optical bandwidth making them similar to monochromatic ones. On mixing, the resulting images are normally very clear as other monochromatic sources of beams. It is not surprising that cathode tube displays, printers and even lamp-based beams are now made of them.
RGB sources however suffer from a major setback given that the power level that is emitted is usually of low level. Most cinema projectors for instance require up to 10 W per color or even more. This level of power sufficiency, maturity or even cost effectiveness is still beyond the existing RGB scanners. When it comes to beam quality, these machines have to operate with high quality beams for them to perform effectively.
External optical modulators are normally used in these types of beamers although RGB sources are fitted with power-modulators for better signals in situations where the optical modulator use is made impossible as a result of low power miniature devices. Laser diodes for instance are used to achieve modulation bandwidth between 10 to 100 megahertz or even much higher resolutions.
There are many methods of constructing RGB lasers. Three lasers with each emitting a particular light of a wanted color is for instance an approach that has been used for long. These visible light beams are however limited in performance as compared to those that are infrared based.
The use of infrared solid-state lasers involves application of a single laser that emits a beam of near infrared (invisible) nature. Such a beam then undergoes through several stages of nonlinear frequency conversion the end of which a three colored beam is produced. The other methods that have also been used to obtain these colors are the combination of parametric oscillators, the use of frequency doublers and the use of frequency mixers.
Technological advancements opens windows for development of a better RGB laser that is capable of overcoming most of the challenges associated with the existing ones. With this possibility, these lasers are predicted to replace all other forms of lasers.
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