Yes, Young's double-slit experiment can be performed with laser light. In fact, using laser light is a common and convenient way to conduct the experiment.
In the original version of Young's double-slit experiment, a beam of light from a single source, such as a monochromatic (single-color) light source like a laser, is directed at a barrier that contains two parallel slits. The light passing through the slits creates two separate coherent sources of waves, which then interfere with each other as they propagate and overlap on a screen or detector placed behind the slits.
Laser light is particularly suitable for this experiment because it has several desirable properties. Laser light is usually coherent, meaning the light waves emitted by a laser are in phase with each other, resulting in a well-defined interference pattern. Laser light is also typically monochromatic, meaning it consists of a single color or wavelength, allowing for a clear and distinct interference pattern.
When laser light is used in the double-slit experiment, the interference pattern that emerges on the screen or detector can be observed as alternating bright and dark fringes, indicating constructive and destructive interference, respectively.
It's worth noting that the interference pattern obtained with laser light can also be affected by factors such as the spacing between the slits, the distance between the slits and the screen, and the characteristics of the laser beam itself, such as its spatial coherence and beam profile. Therefore, experimental setup and adjustments may be required to optimize the visibility and quality of the interference pattern.