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Chapter 17: Q. 12 (page 483)

A carbon dioxide laser is an infrared laser. A CO2 laser with a cavity length of 53.00 cm oscillates in the m = 100,000 mode. What are the wavelength and frequency of the laser beam?

Short Answer

Expert verified

The wavelength of the laser beam is 1.06×10-5m.

The frequency of the laser beam is2.83×1013Hz.

Step by step solution

01

Given information

The length of the cavity is L=53.00cm=0.53m

Modem=100,000

02

The wavelength of the Laser beam

A laser light forms a standing wave inside the cavity.

The wavelength of the laser beam is given by λ=2Lm.

Substitute the given values

λ=2×0.53100000=1.06×10-5m

Therefore, the wavelength of the laser beam is1.06×10-5m.

03

Frequency of the laser beam

The frequency of the laser beam is

f=cλ=3×1081.06×10-5=2.83×1013Hz

Therefore, the frequency of the laser beam is2.83×1013Hz.

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