(a) What voltage should be applied to an electrode to accelerate an electron from zero velocity such that it acquires the same energy as a photon of wavelength X, = 0.87 µm? (b) A photon of wavelength 1.06 µm is combined with a photon of wavelength 10.6, create a photon whose energy is the sum of the energies of the two photons. What is the wavelength of the resultant photon? This process, known as sum-frequency generation, is illustrated in Fig. 22.2-6. um to
(a) What voltage should be applied to an electrode to accelerate an electron from zero velocity such that it acquires the same energy as a photon of wavelength X, = 0.87 µm? (b) A photon of wavelength 1.06 µm is combined with a photon of wavelength 10.6, create a photon whose energy is the sum of the energies of the two photons. What is the wavelength of the resultant photon? This process, known as sum-frequency generation, is illustrated in Fig. 22.2-6. um to
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Transcribed Image Text:13.1-5
Photon Energy.
(a) What voltage should be applied to an electrode to accelerate an electron from zero
velocity such that it acquires the same energy as a photon of wavelength A,
(b) A photon of wavelength 1.06 µm is combined with a photon of wavelength 10.6 µm to
create a photon whose energy is the sum of the energies of the two photons. What is the
wavelength of the resultant photon? This process, known as sum-frequency generation,
is illustrated in Fig. 22.2-6.
= 0.87 µm?
Transcribed Image Text:w3=Wi+w2
w1
Nd3+:YAG laser
0.96 µm
1.06 um
Proustite crystal
w2
CO2 laser
10.6 um
Figure 22.2-6 An example of sum-frequency generation (SFG), also called frequency up-
conversion, in a nonlinear crystal.
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