Laser in underwater lidar application?

AI Thread Summary
The discussion centers on the output beam diameter of microchip pulsed lasers for underwater lidar applications, suggesting it could be represented as \pi/e or potentially another value. The participants question the meaning of "e," debating whether it refers to the charge or the exponential constant. Additionally, there are inquiries about the appropriate polarization and output power specifications for pulsed laser sources in underwater environments. The conversation highlights the complexities and uncertainties in defining these parameters for effective lidar use. Overall, the topic emphasizes the need for further clarification and research in underwater lidar applications.
vani
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what can be the output beam diameter for microchip PULSED laser in underwater lidar application?
 
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I do not think that an answer exits for the given information.
 
It can be \pi/e.
It can be something else too.
 
laser

what does e specify?e charge or exp const?
what type of polarization&output power for pulsed laser source can be used in lidar application under sea?
 
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