William Angerer - Department of Physics and Astronomy - University ...

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parameter
value
Bl 2.35728
B2 -0.01170000 J.lm- 2
B3 0.01054000 J.Lm 2
C 1
1.34143 x 10- 4 J.Lm4
C 2 -4.45368 x 10- 7 J.Lm 6
C 3 5.92362x 10- 8 J.Lm 8
Table 2.3: Laurent series parameters for the ordinary index of quartz [.ri].
2.5 Novel Technique and Apparatus to Measure Ultrafast Pulses
The analysis in the previous section suggests a technique to measure the spectral
bandwidth of ultrafast laser pulses.
Typically pulse lengths are measured by an
autocorrelation technique (see section 3.4.) The autocorrelator method measures the
pulse duration by a nonlinear interferometric technique [48]. The disadvantage of this
technique is that it requires the interfering light pulses to be overlapped in both time
and space, which is somewhat difficult to achieve in practice. If instead one measured
the SHG response of a ",300 J.lm quartz wedge excited by a Ti:AI 2 0 3 ultrafast laser
pulse, the damped Maker fringes could be observed. A "damping factor" may be
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