OPTOGAMA LPA-A v2 Series, Руководство пользователя

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3. Product description
Advanced laser power attenuator LPA-A is a compact
motorised device for laser power control with integrated
controller and absolute position encoder.
The LPA-A is produced in the UV, visible and NIR spectral
ranges, from 250 nm to 2000 nm. This device is combined
with the unique mechanical design which ensures
repeatability and high stability of performance.
All optical components of the LPA-A are made for high LIDT
and provide stable and reliable performance even using
them with high power lasers in industrial applications.
A secondary laser beam from laser power attenuator unit
can be rejected to an external beam dump. The beam dump
is used for avoiding any thermal effects or stress in the
housing of the LPA-A device.
3.1. Optical specifications
3.2. Mechanical specifications
3.3. Electronic specifications
3.4. Conditions
Clear input aperture ø15 mm
Clear output aperture
ø15 mm
Power attenuation range <0.1 % to >98 %
LIDT coating
>10 [J/cm
2
] (10 ns @ 1064 nm)
Adjustment time
< 0.2 sec (min to max)
Aboslute pos. encoder Yes
Resolution
175,542 µsteps in full rotation
(0.002 deg, 7.2 arcsec, 0.035
mrad)
Accuracy
± 0.005 deg,
(±18 arcsec, 0.087 mrad, less
than ±0.01 %)
Motor
2 phase stepper motor,
200 steps with 256 µstepping
Available coatings
A. Standard wavelenghts, nm
1
st
harm 2
nd
harm 3
rd
harm
1064 532 355
1020 - 1040 510 - 520 343
760-840 390 - 410 -
C. Custom wavelenghts
Custom coating available
LPA-A
LPA-A with
beam dump
Lenght 86 mm 86 mm
Width 47 mm 64 mm
Height 58 mm 58 mm
Interface options:
Terminal
Using commands described
in p. 12 “Commands”
Software Using LPA-A software
Input voltage DC 12 V
Transmission speed
up to 115,200 bits/s (RS-232)
full speed USB 2.0
Operating temperature +10
0
C to +40
0
C
Storage temperature
-15
0
C to +50
0
C
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