# Tag Info

## Hot answers tagged lasers

8

The total electrical to optical power efficiency of a laser system is sometimes termed wall-plug efficiency. It is the ratio of $$\eta = \frac{\text{optical output power}}{\text{consumed electrical input power}}$$ The values vary a lot, and also there are other factors like cooling system power which might or might not be included, in which case the ...

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A few points that don't fit into a comment but could help you: Get a better laser source than a 4 \$laser diode. "Better" means a laser with higher beam quality. When you look at a laser's data sheet, it should specify a value$M^2$or "BPP" (beam parameter product). Both these numbers are related, the smaller they are, the better you ... 4 To see why this graph can only have a hyperbolic shape, it can help to take a look at the energy balance of the laser cutting process with absorbed laser power$P_A\$. $$P_A = \underbrace{vtw}_{V_M}\cdot \rho \cdot \underbrace{(c_p \Delta T_P + h_M + \xi h_E)}_{\text{process energy}}+\underbrace{P_L}_{\text{losses}}$$ The term labelled "process energy&...

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However, usually lasers come as a point, which means that we'd have to make the laser head move in quite an exotic curve, which will slow down our cut rate. The limiting factor is usually the cutting speed of the laser. This depends on the laser power, the material characteristics (if it even can be cut by laser) and the material thickness. The fact that ...

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In Europe, the SYLOS3 laser system boasts one of the highest repetition rates 1kHz for high intensity lasers 15[TW] (December 2020) (see Optics.) SYLOS is a part of the ELI-ALPS European Facility in Szeged Hungary, which has operates/plans for four main laser beamlines, operating at different regimes of repetition rates and peak powers: Single Cycle (...

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Bar code readers can read phone screens You can get apps that store cards on your phone (e.g. Stocard) and they work pretty well; at least as good if not better than a printed barcode on a scrunched up grocery bag. I suggest that your photograph is distorted or not clear enough - these apps generate the correct bar code from the numbers and don't suffer from ...

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There are silicone specific adhesives, as silicone does not adhere well to any other material. Appropriately, there are rubber adhesives for genuine rubber as well. The method you describe is going to severely test the adhesion of the material, as it places the most stress along the weakest points in the system. Have you considered using surgical rubber ...

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What you ask is accomplished on a regular basis in a different plane for laser cutters, specifically CO2 in this example. It can certainly be applied to an LED laser and is often done so in the cutters with a beam combiner, used to assist alignment. The above image is from an Aliexpress product post, but is consistent for many laser cutters. Variations of ...

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To expand a bit on the answer of NMech: I would recommend a pulsed laser, as it allows a way more controlled energy input into the fabric. Some information on how to pick a pulsed laser for a process. A rule of thumb when developing a process with a pulsed laser is: The pulse makes the process, the power makes the throughput. What does this mean? When you ...

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