Tsunami Mode-Locked Ti:sappher Laser
10-2
Lok-to-Clock
®
System
The Lok-to-Clock system comprises the Model 3930 electronics module, a
motor-driven high reflector in the Tsunami laser, and a PZT-driven mirror at
M
4
. Using a phase-locked loop, the pulse train of the Tsunami laser is pre-
cisely synchronized to a reference source. An internal 80 MHz reference
oscillator is provided with the system. Alternatively, an external RF source
or another laser can be used as the reference source. If another mode-
locked laser is used as the reference source, then an external photodiode,
such as the Model 3932, is required to provide the appropriate signals to the
Model 3930 electronics. The Model 3930 also provides a 10 MHz reference
for use with other equipment.
Accessories
Model 409-08 Scanning Autocorrelator
The Model 409-08 is an essential accessory for the Tsunami laser system
for measuring ultrashort laser pulse widths from < 60 fs to > 25 ps for
wavelengths from 600 nm to 1.6 µm. It provides a real-time signal of the
second order autocorrelation function for convenient display on any high
impedance oscilloscope.
Model 3980 Frequency Doubler/Pulse Selector
The Model 3980 can be used with the Tsunami system to provide fs or ps
pulse selection (from single-shot to 4 MHz), frequency doubling, or a com-
bination of each. There are six versions available.
Model 3931
The Model 3931 adds approximately 12 ns of adjustment to the Tsunami
laser system. Ask your Spectra-Physics representative for details.
GWU Harmonic Generator System
The GWU harmonic system offers second, third and fourth harmonic
options for the Tsunami laser. It extends the tuning range to the blue and
UV to provide output from 210 to 540 nm. It is also compatible with the
Model 3980 pulse selector.
Opal
®
System
Opal is a fs synchronously pumped optical parametric oscillator (SPPO)
that extends the ease and convenience of the Tsunami Ti:sapphire laser to
an entirely new infrared wavelength range. It produces both a signal and an
idler output having a total wavelength coverage from 1.1 to 2.6 µm. Fre-
quency doubling the signal output also provides access to the “missing”
visible region of the Ti:sapphire spectrum. The output is specified as
> 150 mW at 1.3 and 1.5 µm with a pulse width of < 130 fs. It is controlled
by an electronics module and uses simple, menu-driven software to provide
computer-assisted setup and automated tuning.
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