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Article #7771

Re: Lifetime Issues Again

#7771
From: Ray Reid
Date: Fri, 12 May 1995 00:00
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Fundamentally there are several issues which are the life limiting
constraints with any Gas Laser Device.
A)   The output power is proportional to the Input Current.  The higher the
Tube Current the Higher the rate of Gas Consumption.  Therefore the Lifetime
Is Inversly Proportional to the Tube current.
B)   There are other factors such as stability of the resonator which can
result in artifical loss of power (result is, turn up the current to get the
power you need) valla lower life!  Internal Contamination again artifically
decreasing the effeciency of the laser (again turn up the power-- turn down
the life)!
C)  Items critical to extending the life of the laser.
1)  Operate the laser at optimal alignment (Adequate power at minimum
current.
2)  Utilize Standby (when not scanning reduce the current to 3-4amps (at 3-4
amps the laser should last 4-5Khrs).
3)  Select a Laser that gives you the best dynamic range of operation at the
lowest Tube current.

Good Luck
LaseRay
Contact me if you need further information on Noise, Power, Lifetime Specific
wavelength information etc.
Technical Details
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From: Ray Reid <LaseRay@AOL.COM>
Subject: Re: Lifetime Issues Again
Date: 1995/05/12
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