Re: Most efficient laser?
- From: Sam Goldwasser <sam@xxxxxxxxxxxxxxxxxxxx>
- Date: 28 Apr 2008 19:33:37 -0400
Phil Hobbs <pcdhSpamMeSenseless@xxxxxxxxxxxx> writes:
Richard Saam wrote:
Question:
What is the most efficient laser
as far as (power output) / (power input)
It could be expressed in many units
perhaps:
photons/watt
Richard D. Saam
In photons per watt, a CO2 laser is almost certainly the champ. It's
about the most efficient gas laser around, watt for watt, and its
photons are about 20 times less energetic than visible ones, so you
get a boost of 20x right there.
In terms of (beam power)/(wall plug power), diode lasers win hands
down--slope efficiencies of over 25% are common.
And with the DARPA initiative, they are probably approached/exceeding
80 percent slope efficiency by now.
In fact, even commercial high power laser diodes are well over 50 percent
in slope efficiency and even in wall plug efficiency at max power.
I like your idea of maximum photons/watt though. :)
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- From: Richard Saam
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