A laser diode produces infrared light with a vacuum-measured wavelength of λ=1290[nm]. What is the frequency of it? Assume that c = 3.00 x 108 [m/s] is the vacuum-bound speed of light. A. 23.5[THz] B. 43.0[THz] C. 233[THz] D. 387[THz]

A laser diode produces infrared light with a vacuum-measured wavelength of λ=1290[nm]. What is the frequency of it? Assume that c = 3.00 x 108 [m/s] is the vacuum-bound speed of light. A. 23.5[THz] B. 43.0[THz] C. 233[THz] D. 387[THz]

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter2: One Dimensional Motion

Section: Chapter Questions

Problem 24PQ

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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

Question

A laser diode produces infrared light with a vacuum-measured wavelength of λ=1290[nm].
What is the frequency of it? Assume that c = 3.00 × 108 [m/s] is the vacuum-bound speed of
light.
A. 23.5[THz]
B. 43.0[THz]
C. 233[THz]
D. 387[THz]

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