
3. First light
WARNING
Do not operate the amplifier above the
Maximum current, unseeded
without an appropriately coupled input seed. Operation exceeding that
condition can cause fatal structural degradation of the
TA
diode. Refer to
the
Maximum current, unseeded
specified in the amplifier test report.
The initial
MSA
/
MOA
installation is typically a matter of mounting the
chassis to an optical table, checking the temperature stabilisation and
observing emission of light from the
TA
diode (and seed laser if
MSA
).
The
MSA
/
MOA
includes a water cooling channel for operation at unusually
high or low temperatures, or in laboratories with high or unstable air
temperature. Quick-fit connectors are provided for connection to 4 mm OD
(optionally 6 mm) tubing, but for most applications, water cooling is not
required; dissipation to the air and/or optical table is sufficient.
Proceed with the following steps for initial installation:
1. The
MOGL
abs amplifier chassis should be firmly mounted to an opti-
cal table or other stable surface, using the mounting through-holes,
suitable for both metric and imperial tables, accessed by removing
the amplifier cover.
2. The amplifier exit aperture should be directed towards a suitable
power sensor or a beam block.
3. Connect the laser head to a
MOGL
abs
LDD
controllers (also to a
MOGL
abs
DLC
if
MSA
) using the provided cables. For alternative
electronic controllers use the connector pinout description in ap-
pendix A.
4. Enable the temperature controller for the amplifier (and seed) then
check that the temperature readouts are approaching the set points
7
Summary of Contents for MOA
Page 4: ...ii ...
Page 14: ...4 Chapter 1 Introduction ...
Page 28: ...18 Chapter 4 MSA internal seed alignment ...
Page 36: ...26 Chapter 5 MOA external seed alignment ...
Page 40: ...30 Chapter 6 Output beam optimisation ...
Page 50: ...40 Chapter 7 Fibre coupling ...
Page 60: ...50 Appendix A Electrical connections ...
Page 63: ...53 MOA C compact amplifier 92 6 95 0 160 50 8 50 0 75 0 76 2 58 ...
Page 64: ......
Page 66: ......