Quantum Electronics: Minimizing Beam Volume in Gas Cell

AI Thread Summary
To minimize the beam volume in a gas cell, it is essential to understand the relationship between beam waist and volume. The discussion centers on defining the beam volume for a 4cm long gas cell using a 633nm laser wavelength, with the focus placed in the middle of the cell. Participants are seeking clarification on whether the problem relates to Gaussian beams and how to approach the calculations. Understanding the concept of beam waist is crucial for determining the volume occupied by the laser beam. Guidance on starting the calculations and applying relevant equations is requested.
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Homework Statement



In many laser applications the volume occupies by a laser beam in a gaiven crystal should be minimized. so how i can define that volume for a gas cell(n=1,00) that is 4cm long, using a laser wavelength of 633nm and placing the focus in the middle of the cell.

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The Attempt at a Solution

 
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Is this about Gaussion Beam?
I am not sure what the question is and what i have to do.
The volume is related to waist, isn't it?
so could someone kind enough to give me some hints that how I can start?

Thank you!
 
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