Tsunami - Beckman Institute Laser Resource Center

Table of Contents
Figure A-6: The four prism sequence used for dispersion compensation
in the Tsunami laser. An input pulse with a positive chirp (red
frequencies at the leading edge of the pulse) experiences negative
GVD (red frequencies have longer group delay time) in the prism
sequence. The net effect is that the prism sequence compensates
for the positive GVD and produces a pulse which has no chirp. .......... A-8
Figure A-7: Group delay time as a function of wavelength for a
Gires-Tournois interferometer with a 40 mm spacing and a 4% reflector. .. A-10
Figure B-1 : lnterferometric (Collinear) Autocorrelation .................... B-2
Figure B-2: Background-free (Non-collinear) Autocorrelation .............. B-2
Figure B-3: The Model 409 -08 Autocorrelator Optical Path.
The beam paths are displaced by HRRl and HRR2 in and
out of the plane of the paper, so the configuration corresponds
to the background-free method shown in Figure B-2. ................... B-3
Figure B-4: Using two prisms to compensate for positive GVD. ............ B-6
Figure B-5: Broadening Curve ........................................ B-8
Figure B-6: A Typical Monochromator/CCD Setup ....................... B-11
Figure B-7: Output spectrum of the Tsunami monitored with an
external monochromator/CCD system. (a) shows a cw component
of 1 %, (b) shows a cw component of less than 0.1 %. .................. B-11
Figure C-I: Power Switch, Line Cord, and Voltage Selector Module ........ C-1