Explanation Given: Power consumed P 1 = 150.0 w a t t s Number photons = 1.33 × 10 19 wavelength= 1064 n m Wavelength: Wavelength of any wave is the distance between consecutive peaks or troughs. It is denoted by . The unit of wavelength is etc. Frequency: Frequency of any wave is the number of oscillations per second or the number of oscillation in one second. It is denoted by . The unit of frequency is per second. Its SI unit is , which is equal to . Formula used: P 2 = n h c λ where, λ = Wavelength c= Velocity or speed h = Plank’s constant ( 6.626 × 10 − 34 J ⋅ s o r m 2 k g / s ) = power developed due to the produced photons = number of photons The percent efficiency of the laser = [ Power developed due to the produced photons P 2 Power consumed P 1 ] × 100 Calculation: Convert wavelength in meters: 1 n m = 1 × 10 − 9 m 1064 n m

Chemistry: Structure and Properties (2nd Edition)

2nd Edition

ISBN: 9780134293936

Author: Nivaldo J. Tro

Publisher: PEARSON

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Quantum Chemistry

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Chapter 2, Problem 92E

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The percentage efficiency of the laser

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Chapter 2, Problem 91E

Chapter 2, Problem 93E

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Chemistry: Structure and Properties (2nd Edition)

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The percentage efficiency of the laser

Solution Summary: The author explains the percentage efficiency of the laser, which is 1.653%. Wavelength is the distance between consecutive peaks or troughs.

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Chapter 2 Solutions

To determine:

The percentage efficiency of the laser