Precision II Operation and Maintenance Manual
C
2-4
996-0255 rev. b
enter is the denominator that divides the flashlamp rep
rate to obtain Q-switch rep rate. Example F/5 means that
each 5 flashes of the laser head produces one Q-switch
pulse.
8) Press the key labeled STORE and the program is saved.
9) Press the key labeled ACTIVATE and the reprogrammed
PGM is implemented.
D. Options
The use of the nonlinear crystal KDP allows the generation of Second
Harmonic (532 nm) and Third Harmonic (355 nm) from the YAG funda-
mental (1064 nm). For more information on harmonic generation, see W.
Koechner’s Solid-State Laser Engineering published by Springer-Verlag,
Chapter 10.
Abbreviations used for Continuum’s harmonics are as follows:
DS1 Second Harmonic Crystal Type I KD*P
DS Second Harmonic Crystal Type II KD*P
TS Third Harmonic Crystal Type II KD*P
QS Fourth Harmonic Crystal Type I BBO
DS1-S Second Harmonic Crystal Type I KD*P for seeded system
TS-S Third Harmonic Crystal Type II KD*P for seeded system
DS-S Second Harmonic Crystal Type I KD*P for seeded system
Second harmonic generation
For the performance parameters at 532 nm, see the data sheet
at the front of manual.
Polarization >95% vertical
Input Polarization 1.06 µ circularly polarized.
Install the Second Harmonic Generator Type II, labeled DS.
The crystal DSI can be used, but the harmonic conversion
efficiency will be at least 25% less. See procedure below.
1) Perform system Shutdown procedure (see pg. 2-2).
2) Locate the SHG labeled DS and install on SHG
mount (see next page for harmonic location).
To install:
a. Identify locking pins and guide pins on har-
monic generator and its face plate (see page 2-6).
Harmonic stage
assembly.
Fastening
knob
Upper knob
(vertical
adjustment)
Lower knob
(horiz. adjust-
ment)
set
screws
Upper knob
(vertical
adjustment)
To Next Page
Loading...
Need help?
General