What is the typical wavelength of a Helium-Neon (HeNe) laser?

The typical wavelength of a Helium-Neon (HeNe) laser is 633 nm, which falls within the visible spectrum and produces a red beam of light. This specific wavelength is commonly associated with HeNe lasers, making them popular for various applications such as laser pointers, optical devices, and laboratory experiments. The wavelength of 633 nm is advantageous because it is easily visible to the human eye, providing a high degree of visibility and precision for alignment tasks.

In contrast, the other options provided correspond to different ranges or specific wavelengths not characteristic of HeNe lasers. The broader ranges mentioned do not pinpoint the specific and known wavelength of 633 nm that is widely recognized for Helium-Neon lasers.