All Questions
Tagged with material-science laser
18
questions
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Measuring Temperature of Water-filled Methacrylate Capsule: Laser Thermometer Accuracy and Penetration Depth Inquiry
Imagine that I have a methacrylate capsule filled with water (8cm in diameter and 30cm in length). If I wanted to measure the temperature with a laser thermometer pointing at the capsule, what ...
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2
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43
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Do there exist materials whose Opacity varies with temperature?
Do there exist materials whose Opacity varies with temperature?
E.g a Material that becomes more Opaque as it gets hotter?
- 2,908
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1
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Are there any material coatings that would currently be effective to counter the rise of directed energy weapons?
I've been reading into directed energy weapons recently, and they seem like they're going to be a gamechanger. I'm just curious as to material countermeasures. I've learnt that some dielectric mirrors ...
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What are some of the best materials to use for building a fiber laser safety enclosure of 1060nm - 1085nm?
I have gotten a 30W JPT-LP Litemarker Fiber Laser which has a wavelength range of 1060nm - 1085nm. Before even thinking about using it, i want to build an enclosure for it to increase the level of ...
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How to measure the wavelength of a laser? [duplicate]
I'm building an enclosure for a laser engraver that emits light at ~455nm. I want to be able to measure the wavelength of the light that is refracting off the item being engraved. I would want to be ...
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1
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91
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Why do inorganic lasers not experience problems due to triplet loss?
A major problem for building organic lasers (especially if aiming for electrical pumping) is the creation of triplets that cannot classically photoluminesce (forbidden transition) and can interact ...
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1
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61
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How do fillings change their state once they are put in mouth? (possibly related with lasers)
I recently seen a dentist for my filling, I for the first time paid attention to what he was doing I guess, because the material he used for my filling was easily deformable before he put it on my ...
- 3,464
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Soft magnetic induced magnetization through radiation
Is it possible to induce temporary magnetism upon a soft magnet, such as a soft ferrite, alongside the parallel axis of a laser beam fired at the material? Would the soft magnet need to be ...
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2
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136
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How do the mirrors in lasers resist destruction by the laser?
Are lasers limited by the quality of the mirrors they use? How are the mirrors used in a laser not destroyed or ignited in the process? Are mirrors just really resistant to light? Is the mirror user ...
user254720
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1
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80
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Laser beam versus activly cooled armor. Who will win?
I'm interested in space warfare from a hard sci-fi perspective. Usually I ask these kind of questions on Worldbuilding SE, but I felt that this one fits this SE better.
Recently read this post on the ...
- 121
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79
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How does the time that it takes a laser to deliver a constant amount of energy to a target affect how that target melts or vaporizes?
More specifically, let's assume we're firing a laser 50 microns in diameter at a block of steel 10 cubic meters in size and this laser delivers 1 megajoule of energy during the entire length of time ...
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3
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244
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Reason behind heating the substrate in Pulsed Laser Deposition
Why do we need to supply a constant heat to the substrate while depositing thin films in Pulsed Laser Deposition technique?
- 343
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40
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Lower Threshold optical beam limiter?
We would like to implement a very fast beam limiting, so far google search shows that the common threshold ranges is in 1J/cm^2 or more, this could take seconds to activate as our laser ranges from 1 ...
- 261
1
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1
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61
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Material that changes transparency when lased from side?
I am into photonics research, and have been searching about this topic in vain, but almost nothing from Google shows up. So i turned here for some light.
Do you guys know any material that changes ...
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3
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1
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490
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Carbon fibre laser beam dump material?
A few years ago I came across a material used as a high power laser beam dump. It was made from carbon fibre which looked like a mat made of high density bristles ie all the fibres on the top of the ...
user56903