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 lasers are being exploited as an alternative to arc lamps sources (beamers). Although arc lamps have been used for a long period as a source of beams particularly because they are much cheaper, they suffer from setbacks such as limited lifetime, high wall-plug efficiency is impossible, poor image quality as a result of poor spatial coherence and the fact that available color space is not wide enough. For this reasons, the former is becoming more popular RGB sources are much more popular.
Beams from these sources are known to be coherent in both wavelengths, both in time and space allowing for inferences. If the change in phase properties is able to take place at the same time over a long distance and at the same period of time, then such waves will produce a very clear image. It is possible to cancel such waves with a similar with opposite phase.
These lasers are known to produce beams of the three primary colors with very narrow optical bandwidth making them close to the monochromatic light beams. They are thus capable of producing very clear images on mixing, the reason why they are getting more application like in cathode tube displays, color printers and lamp-based beamers.
These beam sources however are associated with low level power emission. With cinema projectors demanding 10 W for each color or more, these projectors have to be designed to meet this power demand level for them to be usable. Their level of power sufficiency, maturity and cost effectiveness are the major setbacks when it comes to their application.
This are at times fitted with power-modulators particularly in the instances where the use of optical modulators is not practical due to low-power miniature devices. This is done to achieve better signals and laser diodes are used in most of the occasions. These particular diodes help achieve increased bandwidth to tens or hundreds of megahertz which in turns significantly improves 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.
When using an infrared solid state laser, a single beam of a near-infrared laser generating a single color is used. This is then converted into the three color under a several stages of converting non-linear frequency. The other common methods include combining parametric oscillators, frequency doublers method and frequency mixer method.
With the technological advancement, better performing RGB laser machines are being produced. With the current attempt to introduce the fourth color in this type of laser, something that will even improve their performers for the better. The expert prediction is that these forms of lasers will be replacing the other forms of beamers.
RGB lasers are being exploited as an alternative to arc lamps sources (beamers). Although arc lamps have been used for a long period as a source of beams particularly because they are much cheaper, they suffer from setbacks such as limited lifetime, high wall-plug efficiency is impossible, poor image quality as a result of poor spatial coherence and the fact that available color space is not wide enough. For this reasons, the former is becoming more popular RGB sources are much more popular.
Beams from these sources are known to be coherent in both wavelengths, both in time and space allowing for inferences. If the change in phase properties is able to take place at the same time over a long distance and at the same period of time, then such waves will produce a very clear image. It is possible to cancel such waves with a similar with opposite phase.
These lasers are known to produce beams of the three primary colors with very narrow optical bandwidth making them close to the monochromatic light beams. They are thus capable of producing very clear images on mixing, the reason why they are getting more application like in cathode tube displays, color printers and lamp-based beamers.
These beam sources however are associated with low level power emission. With cinema projectors demanding 10 W for each color or more, these projectors have to be designed to meet this power demand level for them to be usable. Their level of power sufficiency, maturity and cost effectiveness are the major setbacks when it comes to their application.
This are at times fitted with power-modulators particularly in the instances where the use of optical modulators is not practical due to low-power miniature devices. This is done to achieve better signals and laser diodes are used in most of the occasions. These particular diodes help achieve increased bandwidth to tens or hundreds of megahertz which in turns significantly improves 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.
When using an infrared solid state laser, a single beam of a near-infrared laser generating a single color is used. This is then converted into the three color under a several stages of converting non-linear frequency. The other common methods include combining parametric oscillators, frequency doublers method and frequency mixer method.
With the technological advancement, better performing RGB laser machines are being produced. With the current attempt to introduce the fourth color in this type of laser, something that will even improve their performers for the better. The expert prediction is that these forms of lasers will be replacing the other forms of beamers.
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