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T he blazed wavelength of a grating is 690 nm. What is it best working range?...
P3.4. The spot size is clearly extremely important in determining the power density of a focused ...
P3.4. The spot size is clearly extremely important in determining the power density of a focused laser beam, an important determi- nant of how it may be used in surgery. However, there is a basic limitation on how small a spot one can achieve with a given wavelength laser beam, ; a given diameter laser beam (D); and a lens with focal length, f. This smallest spot sizc is given by: where d is the diameter of the focused laser...
When laser light of wavelength 632.8 nm passes through a diffraction grating, the first bright spots occur at ± 17.0 ∘ from the central maximum. How many additional pairs of bright spots are there bey...
When laser light of wavelength 632.8 nm passes through a diffraction grating, the first bright spots occur at ± 17.0 ∘ from the central maximum. How many additional pairs of bright spots are there beyond the first bright spots? A converging lens 6.90 cm in diameter has a focal length of 310 mm If the resolution is diffraction limited, how far away can an object be if points on it transversely 4.00 mm apart are to be resolved (according to...
In laser eye surgery, the laser emits a 1.22-ns pulse focused on a spot that is 28.9 um in diameter.
In laser eye surgery, the laser emits a 1.22-ns pulse focused on a spot that is 28.9 um in diameter. Part A If the energy contained in the pulse is 2.84 mJ, what is the power per square meter (the irradiance) associated with this beam? Part B Suppose a molecule with a diameter of 0.634 nm is irradiated by the laser beam. How much energy does the molecule receive in one pulse from the laser? (This much energy is likely to dissociate the molecule.
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping...
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. A typical LASIK laser emits a 1.0-mm-diameter laser beam with a wavelength of 193 nm. Each laser pulse lasts 11 ns and contains 1.3 mJ of light energy. What is the power of one laser pulse? During the very brief time of the pulse, what is the intensity of the light wave?
Part A High-power lasers are used to cut and weld materials by focusing the laser beam...
Part A High-power lasers are used to cut and weld materials by focusing the laser beam to a very small spot. This is like using a magnifying lens to focus the sun's light to a small spot that can burn things. As an engineer, you have designed a laser cutting device in which the material to be cut is placed 3.0 cm behind the lens. You have selected a high- power laser with a wavelength of 1.06 um. (This distance...
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping...
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. A typical LASIK laser emits a 1.0-mm-diameter laser beam with a wavelength of 193 nm. Each laser pulse lasts 10 ns and contains 2.0 mJ of light energy. Part A) What is the power of one laser pulse? Express your answer with the appropriate units. Part B) During the very brief time of the pulse, what is the intensity of the light wave?...
Laser physics 5th edition 5) A pulsed solid state laser operating at wavelength λ= 1 μm...
Laser physics
5th edition
5) A pulsed solid state laser operating at wavelength λ= 1 μm and pulse duration of20 ns is used for material processing application with a focusing lens of f-number-1.8. Calculate the pulse energy required to produce an intensity 1- 2 x100 Wicm? at the focusing point.
If a diffraction grating produces a third-order bright spot for red light of wavelength 700 nm, at 65° from the central maximum at what angle will the second order bright spot be for violet light...
If a diffraction grating produces a third-order bright spot for red light of wavelength 700 nm, at 65° from the central maximum at what angle will the second order bright spot be for violet light of wavelength 400 nm? How many lines per mm on this grating?
If a diffraction grating produces a third-order bright spot for red light of wavelength 700 nm, at 65° from the central maximum at what angle will the second order bright spot be for...
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping...
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. A typical LASIK laser emits a 1.0-mm-diameter laser beam with a wavelength of 193 nm. Each laser pulse lasts 12 ns and contains 1.8 mJ of light energy. What is the power of one laser pulse? Express your answer to two significant figures and include the appropriate units. P = During the very brief time of the pulse, what is the intensity of...
A thin beam of laser light of wavelength 514 nm passes through a diffraction grating having...
A thin beam of laser light of wavelength 514 nm passes through a diffraction grating having 3952 lines/cm. The resulting pattern is viewed on a distant curved screen that can show all bright fringes up to and including ?90.0? from the central spot. If the experiment were performed with all of the apparatus under water (which has an index of refraction of 1.33), what would be the TOTAL number of bright spots that would show up on the screen?
P3.4. The spot size is clearly extremely important in determining the power density of a focused laser beam, an important determi- nant of how it may be used in surgery. However, there is a basic limitation on how small a spot one can achieve with a given wavelength laser beam, ; a given diameter laser beam (D); and a lens with focal length, f. This smallest spot sizc is given by: where d is the diameter of the focused laser...
Part A High-power lasers are used to cut and weld materials by focusing the laser beam to a very small spot. This is like using a magnifying lens to focus the sun's light to a small spot that can burn things. As an engineer, you have designed a laser cutting device in which the material to be cut is placed 3.0 cm behind the lens. You have selected a high- power laser with a wavelength of 1.06 um. (This distance...
Laser physics
5th edition
5) A pulsed solid state laser operating at wavelength λ= 1 μm and pulse duration of20 ns is used for material processing application with a focusing lens of f-number-1.8. Calculate the pulse energy required to produce an intensity 1- 2 x100 Wicm? at the focusing point.
If a diffraction grating produces a third-order bright spot for red light of wavelength 700 nm, at 65° from the central maximum at what angle will the second order bright spot be for violet light of wavelength 400 nm? How many lines per mm on this grating?
If a diffraction grating produces a third-order bright spot for red light of wavelength 700 nm, at 65° from the central maximum at what angle will the second order bright spot be for...
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. A typical LASIK laser emits a 1.0-mm-diameter laser beam with a wavelength of 193 nm. Each laser pulse lasts 12 ns and contains 1.8 mJ of light energy. What is the power of one laser pulse? Express your answer to two significant figures and include the appropriate units. P = During the very brief time of the pulse, what is the intensity of...
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