6. A 0.10 J laser generates 3.0 x 10-9s pulses. What is the average power output...
5.) Lasers can be used to drill or cut material. One such laser generates a series of high intensity pulses rather than a continuous beam of light. Each pulse contains 1.00 Joules of energy and lasts 18 nanoseconds. The laser fires 15 such pulses per second. (a) Find the peak power of the laser. (b) Find the average power output of the laser. (c) A lens focuses a laser beam to a 15 μm diameter circle on the target. During...
Chapter 24 Electromagnetic Waves 6. A neodymium-glass laser emits short pulses of high-intensity of electromagnetic waves. The electric field of such a laser pulse has an rms value of Ems = 8.0 x 10' N/C. (a) Determine the average power of each pulse that passes through the cross-sectional area of of the laser beam A -5.05 x 10-5 m. (b) Determine the average intensity of this laser in W/m². - 4-
A neodymium-glass laser emits short pulses of high-intensity
electromagnetic waves. The electric field of such a wave has an rms
value of Erms = 2.0 × 109 N/C. Find the average power of each pulse
that passes through a 1.6 × 10-5-m2 surface that is perpendicular
to the laser beam.
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. The electric field of such a wave has an rms value of E 2.0 x 109 NIC. Find the average...
A laser used in LASIK eye surgery produces 50 pulses per second. The wavelength is 192 nm (in air) and each pulse lasts 11 ps. The average power emitted by the laser is 122.8 mW and the beam diameter is 0.8 mm. (a) In what part of the EM spectrum is the laser pulse? The wavelength of the laser light is longer/shorter than visible light. (b) How long (in centimeters) is a single pulse of the laser in air? d...
Very short pulses of high-intensity laser beams are used to repair detached portions of the retina of the eye. The brief pulses of energy absorbed by the retina welds the detached portion back into place. In one such procedure, a laser beam has a wavelength of 810 nm and delivers 250 mW of power spread over a circular spot 510 μm in diameter. The vitreous humor (the transparent fluid that fills most of the eye) has an index of refraction...
7. A single pulse of a laser yields an average of 5.00 x 1018 photons with = 532 nm. If melting ice to water at 0°C requires 6.01 kJ/mol, what is the fewest number of laser pulses needed to melt 125.3 g of ice?
Question 10 5 pts A laser pointer delivers an average power of 2 mW in a circular beam of 2 mm diameter. What is the average energy density in the beam? O 0.75E-6 J/cubic meter 1.5E-6 J/cubic meter 2.1E-6 J/cubic meter O 4.4E-6 J/cubic meter 7.6E-6 J/cubic meter
Question 10 5 pts A laser pointer delivers an average power of 2 mW in a circular beam of 2 mm diameter. What is the average energy density in the beam? O 0.75E-6 J/cubic meter O 1.5E-6 J/cubic meter O 2.1E-6 J/cubic meter 44E-6 J/cubic meter 0 7.6E-6 J/cubic meter
When operated with a 750nm wavelength, a certain Ti: sapphire
laser is capable of producing pulses as short as 50 fs. Each with
an energy content of 500 J. A) Calculate the instantaneous power
output of the laser. b) If the laser is capable of a pulse
repetition rate of 80MHZ, calculate the maximum average power
output that can be obtained.
-. Cuando se opera con una longitud de onda de 750 nm, cierto láser de Ti:zafiro es capaz de...
Question 10 A laser pointer delivers an average power of 2 mW in a circular beam of 2 mm diameter. What is the av age energy density in the beam? 0.75E-6 J/cubic meter 1.5E-6 J/cubic meter 2.1E-6 J/cubic meter 4.4E-6 J/cubic meter 7.6E-6 J/cubic meter 5 pts Question 11 por second