An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
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Chapter 9, Problem 9MC
To determine
Properties of laser.
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Does a laser material have to have at least three energy levels? If that is the case, why or why not?
Which of the following is not always a property of lasers?(a) All of the photons in laser light have the same phase.(b) All laser photons have nearly identical frequencies.(c) Laser light moves as a beam, spreading out very slowly.(d) Laser light is always brighter than other sources oflight.(e) Lasers depend on an inverted population of atomswhere more atoms occupy a higher energy state thansome lower energy state.
A collection of atoms has 20% of the sample in a state 4.7 eV above the ground state. If these emit coherent radiation, what is the wavelength of the laser light produced in nanometers? Please give your answer with no decimal places. (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ∙ s, 1 eV = 1.60 × 10-19 J)
Chapter 9 Solutions
An Introduction to Physical Science
Ch. 9.1 - Prob. 1PQCh. 9.1 - Prob. 2PQCh. 9.2 - Prob. 1PQCh. 9.2 - Prob. 2PQCh. 9.2 - Prob. 9.1CECh. 9.3 - Prob. 1PQCh. 9.3 - When does a hydrogen atom emit or absorb radiant...Ch. 9.3 - Prob. 9.2CECh. 9.3 - Prob. 9.3CECh. 9.3 - Prob. 9.4CE
Ch. 9.4 - Prob. 1PQCh. 9.4 - Prob. 2PQCh. 9.5 - Prob. 1PQCh. 9.5 - Prob. 2PQCh. 9.6 - Prob. 1PQCh. 9.6 - Prob. 2PQCh. 9.6 - Prob. 9.5CECh. 9.7 - Prob. 1PQCh. 9.7 - Prob. 2PQCh. 9 - Prob. AMCh. 9 - Prob. BMCh. 9 - Prob. CMCh. 9 - Prob. DMCh. 9 - Prob. EMCh. 9 - Prob. FMCh. 9 - Prob. GMCh. 9 - Prob. HMCh. 9 - Prob. IMCh. 9 - Prob. JMCh. 9 - Prob. KMCh. 9 - Prob. LMCh. 9 - Prob. MMCh. 9 - Prob. NMCh. 9 - Prob. OMCh. 9 - Prob. PMCh. 9 - Prob. QMCh. 9 - Prob. 1MCCh. 9 - Prob. 2MCCh. 9 - Prob. 3MCCh. 9 - Prob. 4MCCh. 9 - Prob. 5MCCh. 9 - Prob. 6MCCh. 9 - Prob. 7MCCh. 9 - Prob. 8MCCh. 9 - Prob. 9MCCh. 9 - Prob. 10MCCh. 9 - Prob. 11MCCh. 9 - Prob. 12MCCh. 9 - Prob. 13MCCh. 9 - Prob. 14MCCh. 9 - Prob. 1FIBCh. 9 - Prob. 2FIBCh. 9 - Prob. 3FIBCh. 9 - Prob. 4FIBCh. 9 - Prob. 5FIBCh. 9 - Prob. 6FIBCh. 9 - Prob. 7FIBCh. 9 - Prob. 8FIBCh. 9 - Prob. 9FIBCh. 9 - Prob. 10FIBCh. 9 - Prob. 11FIBCh. 9 - Prob. 12FIBCh. 9 - Prob. 1SACh. 9 - Prob. 2SACh. 9 - Prob. 3SACh. 9 - Prob. 4SACh. 9 - Prob. 5SACh. 9 - Prob. 6SACh. 9 - Prob. 7SACh. 9 - Prob. 8SACh. 9 - Prob. 9SACh. 9 - Prob. 10SACh. 9 - Prob. 11SACh. 9 - Prob. 12SACh. 9 - Prob. 13SACh. 9 - Prob. 14SACh. 9 - Prob. 15SACh. 9 - Prob. 16SACh. 9 - Prob. 17SACh. 9 - Prob. 18SACh. 9 - Prob. 19SACh. 9 - Prob. 20SACh. 9 - Prob. 21SACh. 9 - Prob. 22SACh. 9 - Prob. 23SACh. 9 - Prob. 24SACh. 9 - Prob. 25SACh. 9 - Prob. 26SACh. 9 - Prob. 27SACh. 9 - Prob. 28SACh. 9 - Prob. 29SACh. 9 - Prob. 30SACh. 9 - Prob. 31SACh. 9 - Prob. 32SACh. 9 - Prob. 33SACh. 9 - Prob. 34SACh. 9 - Visualize the connection for the descriptions of...Ch. 9 - Prob. 1AYKCh. 9 - Prob. 2AYKCh. 9 - Prob. 3AYKCh. 9 - Prob. 4AYKCh. 9 - Prob. 5AYKCh. 9 - Prob. 1ECh. 9 - Prob. 2ECh. 9 - Prob. 3ECh. 9 - Prob. 4ECh. 9 - Prob. 5ECh. 9 - Prob. 6ECh. 9 - Prob. 7ECh. 9 - Prob. 8ECh. 9 - Prob. 9ECh. 9 - Prob. 10ECh. 9 - Prob. 11ECh. 9 - Prob. 12E
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- A hypothetical molecular laser works in 3 level energy system. The energies of the levels. E₁, E2, and E3 are 0 eV, 0.18 eV and 0.30 eV respectively. If the laser transition takes place between the levels E₂ and E₁ find the (1) wavelength of radiation that excites the molecules for the laser action. 1arrow_forward10:30 ( Notes Calculate the energy in eV corresponding to the 510 nm of light inside a medium refractive index 1.2. Round to 2 decimal placesarrow_forwardA hypothetical molecular laser works in 3 level energy system. The energies of the levels E₁. Eg and E3 are OeV, 0.18 V and 0.30 ev resp. of the laser transition takes place between the levels E₂ 4 E₁ find the (1) wavolength of radiation that excites molecules for laser action. thearrow_forward
- The wavelength of light emitted by an argon laser is ? = 488.0 nm. What is the frequency of these light waves (in Hz)?arrow_forwardProblem 10: Two flat mirrors are connected to each other such that they make an angle of ψ. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of θ = 107 degrees with respect to the initial beam (see figure). Part (a) Write an expression for the angle, ψ, between the mirrors. Part (b) Calculate this angle, ψ, in degrees.arrow_forward(a) LASER is an abbreviation of a word string. Spell it out. (b) Explain the working principle of laser photon emission by using the concepts “population inversion”, “stimulated emission” and corresponding energy-band diagrams. (c) Write down the types of the LASERs you have learnt.arrow_forward
- A collection of atoms has 20% of the sample in a state 7.60 eV above the ground state. If these emit coherent radiation, what is the wavelength of the laser light produced in nanometers? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ∙ s, 1 eV = 1.60 × 10-19 J) Give your answer as a whole number.arrow_forwardA student is using a 100 lasers that he bought from e-bay. If each source produces a wave of amplitude = 212967 V/m, then calculate the irradiance produced by these 100 lasers when they are used to illuminate one point.arrow_forwardFor laser action, the lasing atom must have at least three energy levels. Why?arrow_forward
- A collection of atoms has 20% of the sample in a state 5.9 eV above the ground state. If they emit coherent radiation, what is the wavelength of laser light? ( ) 340 nm ( ) 450 nm ( ) 210 nm ( ) 91 nm ( ) 34 nmarrow_forwardUse the Bohr model to find the second longest wavelength of light in the Paschen series for a triply-ionized Be atom (Z = 4). Recall that the Paschen series corresponds to transitions to the second excited state (n = 3). a) 13.5 nm b) 117 nm c) 73.0 nm d) 41.1 nm e) 80.2 nmarrow_forwardPulsed lasers are very similar to regular lasers, except they don't continuously emit laser light. Baby spice is looking at one on Ebay, and she finds a pulsed He-Ne laser that emits a cylindrical beam of light with a diameter of 0.750 cm. Each pulse lasts for 1.30 ns, and each burst contains an amount of energy equal to 3.00 J. Baby Spice has the following questions about this laser. (a) What is the length of each pulse of laser light? m (b) What is the average energy per unit volume for each pulse? J/m³arrow_forward
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