Here’s a surprisly simple way to build yourself a laser-based listening device. It consists of two modules, a transmitter and a receiver. The transmitter is a set of lasers, one is visible red ...

[Louis] cautions that laser modules sourced online are often more powerful than their labels claim. So you, and anyone else around, would be wise to wear eye protection while the laser is being fired.

“Increasing the Q-switched pulse width to 7.7 μs does ... reaching the benchmark for nanosecond laser-manufactured OSC modules.” Fabricating a device with an area of 1 cm2, the module yielded ...

The HHL modules are hermetically sealed, electrically isolated and can integrate an array of options, such as optics for rapid-axis collimation. The proprietary laser chip design from Sheaumann ...