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.
Arc lamp sources are now being replaced with RGB lasers for light emissions, particularly given that they are much better when it comes to performance as compared to the arc lamp beamers. Arc lamp beamers are known to be the cheaper alternatives but they have limited lifetime, poor image quality and impossibility to achieve high wall-plug efficiency.
The success of these lasers has to do with the coherency of wavelengths. They are both coherent in time and space to each other hence the possibility of inferences. The change of phase properties happens at the same time over a long distance making them preferred for entertainment and other professional uses.
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.
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.
In situations where optical modulators is not practical as a result of low-power miniature devices or for any other reason, the RGB sources are fitted with power-modulators for better signals. Using laser diodes in particular helps achieve modulation bandwidth of tens to hundreds of megahertz or even higher resolutions.
The red, green and blue lasers come in several types depending on the design and construction. One method involves the use of three different types of lasers with each emitting beam of a particular color. These forms of visible beam lasers are however not as suitable as the non visible ones that are near infrared in nature.
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 advancement is however set to completely address the challenges in with an RGB laser. Just like other forms of lasers, they are set to be used in all other areas where there are need for lasers like in hospital machines, cutting technology and in entertainment industry among others.
Arc lamp sources are now being replaced with RGB lasers for light emissions, particularly given that they are much better when it comes to performance as compared to the arc lamp beamers. Arc lamp beamers are known to be the cheaper alternatives but they have limited lifetime, poor image quality and impossibility to achieve high wall-plug efficiency.
The success of these lasers has to do with the coherency of wavelengths. They are both coherent in time and space to each other hence the possibility of inferences. The change of phase properties happens at the same time over a long distance making them preferred for entertainment and other professional uses.
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.
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.
In situations where optical modulators is not practical as a result of low-power miniature devices or for any other reason, the RGB sources are fitted with power-modulators for better signals. Using laser diodes in particular helps achieve modulation bandwidth of tens to hundreds of megahertz or even higher resolutions.
The red, green and blue lasers come in several types depending on the design and construction. One method involves the use of three different types of lasers with each emitting beam of a particular color. These forms of visible beam lasers are however not as suitable as the non visible ones that are near infrared in nature.
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 advancement is however set to completely address the challenges in with an RGB laser. Just like other forms of lasers, they are set to be used in all other areas where there are need for lasers like in hospital machines, cutting technology and in entertainment industry among others.
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