The laser emits light with a wavelength of 632.82 nm in air. The wavelength is completely stable and can be used as a reference.
The laser light is emitted in a well-defined direction as a thin light ray. Suited for many optics demonstrations such as refraction, interference and communication. It is possible to modulate the light ray, for instance with a music signal.
Provided with two sets of Ø10 mm stainless steel rods. The longer set fits the rest of our optical components for use on 294600 Optical Bench.
In interference experiments you often need to widen the light ray into a thicker parallel beam. This is done with a x10 microscope objective (076886) and an f = 10 cm convex lens.
The plane of polarisation varies as a function of temperature and time. The laser has a mechanical beam stop, enabling you to shut off the light without powering down the laser tube.
The laser is provided with a key switch.