![Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green](https://c8.alamy.com/comp/J4JPKP/laser-and-ruby-rod-experiment-with-a-green-laser-beam-being-used-to-J4JPKP.jpg)
Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green
![Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green](https://c8.alamy.com/comp/J4JPKW/laser-and-ruby-rod-experiment-with-a-green-laser-beam-being-used-to-J4JPKW.jpg)
Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green
![Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green Laser and ruby rod. Experiment with a green laser beam being used to induce red luminescence in a rod of artificial ruby. Synthetic ruby is used to make ruby lasers, where green](https://c8.alamy.com/comp/J4JPKF/laser-and-ruby-rod-experiment-with-a-green-laser-beam-being-used-to-J4JPKF.jpg)