Mode-locked CW dye laser

Pico- and subpicosecond photodissociation was obtained by using mode-locked cw dye laser or a frequency doubled mode-locked Nd glass laser 55 58). 

Passive mode locking can also be realized in cw lasers. However, the smaller amplification restricts stable operation to a smaller range of values for the ratio of absorption to amplification, and the optimum conditions are more critical than in pulsed operation [660,661]. With passively mode-locked cw dye lasers pulse widths down to 0.5 ps have been achieved [662]. 

J. Kiihl, H. Klingenberg, D. von der Linde, Picosecond and subpicosecond pulse generation in synchroneously pumped mode-locked CW dye lasers. Appl. Phys. 18,279 (1979)... 

C.V. Shank, E.P. Ippen, Subpicosecond kilowatt pulses from a mode-locked CW dye laser. Sov. Phys. JETP 34,62 (1972)... 

J.B. Atkinson, J. Becker, and W. Demtroder, Cavity Length Detuning Characteristics of the Synchronously Mode-Locked CW Dye Laser , IEEE Quant. Electr. 15, 912 (1979). 

Shank, C. V., and Ippen, E. P. (1974). Subpicosecond kilowatt pulses from mode-locked CW dye laser. Applied Physics Letters, 24, 373-375. 

The experimental arrangement which is similar to that of time-resolved polarization spectroscopy (Fig. 12.11) is depicted in Fig. 12.16. The pulse train is provided by a synchroneously pumped, mode-locked CW dye laser. A fraction of each pulse is split by the beam splitter BS and passes... 

For many applications the time interval AT = 2nd/c between two successive pulses should not be too short. This implies that the cavity length d has to be sufficiently long. In order to avoid inconveniently large geometrical extensions of the arrangement, an optical delay line can be used. Figure 11.9 illustrates a synchronously pumped mode-locked cw dye laser system with such an optical delay line. 

Figure 11.11 shows such a combination of cavity dumping and mode locking. The time interval aT between successive pulses can be controlled between Is and 0.3 ys. The cavity dumping technique can be also applied to synchronously pumped mode-locked cw dye lasers. 

F.O. Neill Picosecond pulses from a passively mode-locked cw dye laser. Opt. Commun. 5, 360 (1972)... 

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