Increase Laser Power out of fiber optic

[roadrunner123]

I am working on a project and am combining three laser beams in an effort to make artificial white light out of the end of the fiber. It is currently producing about 1 mw of power. How could I increase the power out of the end of the optical fiber?

 

[Gordianus]

Could you please give us more information? Some drawings or schematics?

 

[roadrunner123]

Here is a rough sketch. The ellipses the lasers are going through represent prisms. The thicker line where the lasers (green, blue, yellow) meet represents the optical fiber. I thought about placing a lens of some sort between the second prism and the optical fiber to focus the light more but not sure if that will increase the power a significant amount.

 

[Claude Bile]

I would try making your red/green/blue beams colinear before focusing them into the end of a fiber. I've found that a good 20x objective works best for standard single-mode telecom fibre; a lower mag objective can be used if the fibre is multimode.

Claude.

 

[sardar]

Increasing the power output of a fiber optic system involves several factors that need to be considered. First, the power of each individual laser beam needs to be optimized. This can be achieved by adjusting the input power and the beam quality of each laser. Additionally, the alignment of the three laser beams needs to be precise in order to maximize the power output.

Another factor to consider is the type and quality of the fiber optic cable being used. Different types of fibers have varying levels of power loss, so using a high-quality, low-loss fiber can help increase the overall power output.

Furthermore, the length of the fiber optic cable can also affect the power output. The longer the cable, the more power will be lost due to attenuation. Therefore, using a shorter fiber optic cable or finding ways to minimize the length of the cable can also help increase the power output.

In addition to these technical considerations, it is important to ensure that the laser beams are combined efficiently at the end of the fiber. This can be achieved by using specialized optics such as beam combiners or fiber couplers.

Overall, increasing the power output of a fiber optic system requires careful optimization and precise alignment of the laser beams, as well as the use of high-quality components and efficient beam combining techniques.