Question

A He-Ne laser emitting at 632.8 nm makes a spot with a radius equal to 100...

A He-Ne laser emitting at 632.8 nm makes a spot with a radius equal to 100 nm at a distance of 500 m from the laser . What is the radius of the beam at the waist ( considering the waist and the laser are in the same plane ?

Homework Answers

Answer #1

hh

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose a confocal cavity of a He-Ne laser (l =632.8 nm) with length 30 cm. Calculate...
Suppose a confocal cavity of a He-Ne laser (l =632.8 nm) with length 30 cm. Calculate the following: a. the minimum beam diameter in the cavity. b. the beam diameter at each mirror. c. the angular divergence.
A red He-Ne laser with a wavelength of 632.8 nm illuminates two narrow horizontal slits with...
A red He-Ne laser with a wavelength of 632.8 nm illuminates two narrow horizontal slits with a gap distance 0.200mm. A pattern of interference bands then appears on a screen 1.00m from the columns. a) How far from the central maximum, in both radians and millimeters on the screen, is first minimum? b) How far in millimeters on the screen, is the fifth maximum from the central maximum? c) What is the intensity of the fifth maximum compared to the...
A red He-Ne laser with a wavelength of 632.8 nm illuminates two narrow horizontal slits with...
A red He-Ne laser with a wavelength of 632.8 nm illuminates two narrow horizontal slits with gap distance 0.200 mm. A pattern of interference bands then appears on a screen 1.00m from the columns. a) How far from the central maximum, in both radians and millimeters on the screen, is first minimum? b) How far in millimeters on the screen, is the fifth maximum from the central maximum? c) How big is the intensity in the fifth maximum compared to...
A red He-Ne laser with a wavelength of 632.8 nm illuminates two narrow horizontal slits gap...
A red He-Ne laser with a wavelength of 632.8 nm illuminates two narrow horizontal slits gap distance 0.200mm A pattern of interference bands then appears on a screen 1.00m from the columns. a) How far from the central maximum, in both radians and millimeters on the screen, is first minimum? b) How far in millimeters on the screen, is the fifth maximum from the central maximum? c) How big is the intensity in the fifth maximum compared to the intensity...
Consider a He-Ne laser oscillating at the wavelength of λ = 632.8 nm with a Doppler-broadened...
Consider a He-Ne laser oscillating at the wavelength of λ = 632.8 nm with a Doppler-broadened gain linewidth of Δνg = 1.7×109 Hz. (The gain linewidth is the width of the Gaussian distribution of the gain of the laser medium. For gas lasers it is usually determined by Doppler broadening.) Assume that the laser operates with a resonator of length L = 50 cm. Calculate the number of modes in which the laser can emit laser light. Hint: calculate the...
A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on...
A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on two very narrow slits 0.070 mm apart. Part A How far apart are the fringes in the center of the pattern on a screen 4.1 m away?
A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on...
A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on two very narrow slits 0.066 mm apart. Part A How far apart are the fringes in the center of the pattern on a screen 4.1 m away? Express your answer to two significant figures and include the appropriate units.
A fiber laser (? =1070 nm) with output power of 300 W is being used. The...
A fiber laser (? =1070 nm) with output power of 300 W is being used. The 1/e2 radius at the waist of the beam is 100 μm and is located at the surface of a substrate. 1. If the beam is Gaussian, what is the size of the beam 10 mm below the substrate? 2. If the beam has an M^2 value of 7.7, what is the size of the beam 10 mm below the substrate? 3. In terms of...
(a) A 633-nm He-Ne laser is incident on a slab of an unknown material. Within the...
(a) A 633-nm He-Ne laser is incident on a slab of an unknown material. Within the slab, the laser’s wavelength is 329nm. Determine whether the substance is most likely zircon or diamond. (b) Suppose a layer of water were placed on top of the slab. Determine the ratio of thickness of the slab versus the water if both materials are to contain the same number of waves.
A laser at rest is emitting photons at 400 nm (what color is this?) If we...
A laser at rest is emitting photons at 400 nm (what color is this?) If we observe the same laser moving away from us at one-fourth the speed of light, what color light will we see coming out of the laser? Bonus: Is this a good approximation for these kinds of velocities? See Doppler effect slides.