#16 in Optoelectronic products
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Reddit mentions of 405nm 100mw Violet Blue Laser Diode Module Focusable 5V Laser Dot Diode Module 12mm x 45mm with AC Adapter
Sentiment score: 1
Reddit mentions: 1
We found 1 Reddit mentions of 405nm 100mw Violet Blue Laser Diode Module Focusable 5V Laser Dot Diode Module 12mm x 45mm with AC Adapter. Here are the top ones.
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- Output Power: 100mw, Wavelength: 405nm
- Working Voltage: 5.0V DC, Working Current: <200mA
- Dimensions: 12mm x 35mm (sometimes 12 x 40mm according to factory batch)
- Laser Shape: Dot, Focusable: yes
- Material and Color: Aluminum, Lens: plastic
Features:
Specs:
Hey! I'm a chemistry grad student, and my group does this demo as part of a science outreach program we run. Here's how we do it:
We use orange highlighter for the right solution, which works quite well. You just dissolve an orange highlighter cartridge in some water.
The center one is just store-bought tonic water, though you could try some other colorless fluorescent compounds like POPOP or anthracene (the tonic water is probably the best and easiest though).
The left one can be substituted with a green highlighter dissolved in water, but it doesn't produce that nice line when you shine the laser through. Fluorescein is a pretty common fluorescence standard, so it's quite possible that your lab would have some. If not, you can actually just buy it on Amazon. It dissolves in mildly basic aqueous conditions (~0.1 M NaOH is what I use)
We use a UV laser diode for the light source, something like this.
Hope that helps!