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An optical chopper is a device placed in the laser beam path to periodically obstruct the light. If a continuous wave laser beam is passed through an optical chopper, it is "chopped" into a pulsed beam of some frequency. The light only passes in between two blades. A student is working in a laboratory and requires a pulsed laser beam. However, the student only has a continuous wave laser. The student knows that they can use a chopper instead of having to purchase a brand new laser. The chopper has 8 blades (just like in the graphic above), and is rated to supply frequencies between 4Hz and 10kHz. Each blade subtends an angle 0=0.339 rad. If the pulsed beam is desired to have each pulse train (the light in between two gaps) last 81.33 us, what frequency should the student select for the optical chopper? Include SI units (Hint: frequency and angular velocity are related by the formula w = 2n f)

An optical chopper is a device placed in the laser beam path to periodically obstruct the light. If a continuous wave laser beam is passed through an optical chopper, it is "chopped" into a pulsed beam of some frequency. The light only passes in between two blades. A student is working in a laboratory and requires a pulsed laser beam. However, the student only has a continuous wave laser. The student knows that they can use a chopper instead of having to purchase a brand new laser. The chopper has 8 blades (just like in the graphic above), and is rated to supply frequencies between 4Hz and 10kHz. Each blade subtends an angle 0=0.339 rad. If the pulsed beam is desired to have each pulse train (the light in between two gaps) last 81.33 us, what frequency should the student select for the optical chopper? Include SI units (Hint: frequency and angular velocity are related by the formula w = 2n f)

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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An optical chopper is a device placed in the laser beam path to periodically obstruct the light. If a continuous wave laser beam is passed through an optical chopper, it is "chopped" into a pulsed beam of some frequency. The light only passes in between two blades. A student is working in a laboratory and requires a pulsed laser beam. However, the student only has a continuous wave laser. The student knows that they can use a chopper instead of having to purchase a brand new laser. The chopper has 8 blades (just like in the graphic above), and is rated to supply frequencies between 4Hz and 10kHz. Each blade subtends an angle 0=0.339 rad. If the pulsed beam is desired to have each pulse train (the light in between two gaps) last 81.33 µs, what frequency should the student select for the optical chopper? Include SI units (Hint: frequency and angular velocity are related by the formula w = : 2πf) Answer: Check
Transcribed Image Text:An optical chopper is a device placed in the laser beam path to periodically obstruct the light. If a continuous wave laser beam is passed through an optical chopper, it is "chopped" into a pulsed beam of some frequency. The light only passes in between two blades. A student is working in a laboratory and requires a pulsed laser beam. However, the student only has a continuous wave laser. The student knows that they can use a chopper instead of having to purchase a brand new laser. The chopper has 8 blades (just like in the graphic above), and is rated to supply frequencies between 4Hz and 10kHz. Each blade subtends an angle 0=0.339 rad. If the pulsed beam is desired to have each pulse train (the light in between two gaps) last 81.33 µs, what frequency should the student select for the optical chopper? Include SI units (Hint: frequency and angular velocity are related by the formula w = : 2πf) Answer: Check
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