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1. The carbon dioxide laser is one of the most powerful developed. The energy
difference between the two laser levels is 0.117 eV. Determine (a) the
frequency and (b) the wavelength of the radiation emitted by this laser. (c)
In what portion of the electromagnetic spectrum is this radiation?
2. A ruby laser delivers a 10.0-ns pulse of 1.00-MW average power. If the
photons have a wavelength of 694.3 nm, how many are contained in the
pulse?
3. A pulsed ruby laser emits light at 694.3 nm. For a 14.0-ps pulse containing
3.00 J of energy, find (a) the physical length of the pulse as it travels through
space and (b) the number of photons in it. (c) The beam has a circular cross
section of diameter 0.600 cm. Find the number of photons per cubic
millimeter.
4. A pulsed laser emits light of wavelength λ. For a pulse of duration At having
energy TER, find (a) the physical length of the pulse as it travels through space
and (b) the number of photons in it. (c) The beam has a circular cross section
having diameter d. Find the number of photons per unit volume.
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Transcribed Image Text:1. The carbon dioxide laser is one of the most powerful developed. The energy difference between the two laser levels is 0.117 eV. Determine (a) the frequency and (b) the wavelength of the radiation emitted by this laser. (c) In what portion of the electromagnetic spectrum is this radiation? 2. A ruby laser delivers a 10.0-ns pulse of 1.00-MW average power. If the photons have a wavelength of 694.3 nm, how many are contained in the pulse? 3. A pulsed ruby laser emits light at 694.3 nm. For a 14.0-ps pulse containing 3.00 J of energy, find (a) the physical length of the pulse as it travels through space and (b) the number of photons in it. (c) The beam has a circular cross section of diameter 0.600 cm. Find the number of photons per cubic millimeter. 4. A pulsed laser emits light of wavelength λ. For a pulse of duration At having energy TER, find (a) the physical length of the pulse as it travels through space and (b) the number of photons in it. (c) The beam has a circular cross section having diameter d. Find the number of photons per unit volume.
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