The process is only about 48% efficient, meaning that IR leaks out along with the green light. The better quality DPSS laser pointers include a quality IR filter to remove it; cheaper ones often ...

In Optica, researchers describe how they used a ruby crystal and specific laser wavelengths to show that a laser ... a dark ...

On the occasion of Pakistan Day, under the guidance of Chief Minister Punjab Maryam Nawaz Sharif, the country's largest laser light show was held at Minar-e-Pakistan.For the first time in this grand ...

Thanks to the reader who provided heads-up on this - a laser light show from the Space Needle on Friday night, likely visible here across the bay. Here's the alert sent by Needle management: On Friday ...

Late at night, Minar-e-Pakistan lit up with green and white lights, creating a breathtaking sight visible from afar. During the laser light show, images of the crescent, star, and national flag ...