Question

In: Physics

In the laser lab, temperature is used to control the wavelength of the laser, and a...

In the laser lab, temperature is used to control the wavelength of the laser, and a grating and several mirrors are used to convert the change of wavelength to change of laser beam propagation direction and finally to the change of position of the laser spot on the grid paper.

If the groove separation is 0.5 micrometers, the distance between the grating and the paper is 1 meters, and if the wavelength change is 2 nm, how much does the spot move on the paper?

Please show all work.

Expert Solution

Here,
Groove separation
Distance between the grating and the paper
Wavelength
Spot distance from the central bright spot
Order of the spot

According to diffracting grating, spot distance from the central bright spot for order of the spot :

For the spot order , spot moves .

According to diffracting grating, spot distance from the central bright spot for order of the spot :

For the spot order , spot moves .

genius_generous answered 2 years ago

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