Laser flashlamp-pumped tunable

A resistor completed the circuit and signals were measured across the resistor. The laser was a flashlamp pumped tunable dye laser with a pulse duration of -1 ps and a peak power of several kW the bandwidth was 0.014 nm in the neighborhood of 589 nm. We used a stoichiometric H2-02 Ar flame of 1800 K, shielded with a mantle flame of identical composition. In the inner flame a 2500 pg/ml NaCl solution was nebulized. An extensive description of the experiment can be found elsewhere (7). 

G. Marowsky A tunable flashlamp-pumped dye ring laser of extremely narrow bandwidth. IEEE J. QE-P, 245 (1973)... 

Wyatt, R. Broadly tunable blue-green picosecond pulses from a flashlamp-pumped dye laser. Opt. Commun. 1981,38, 64-66. 

F. Wavelength tunability of new flashlamp-pumped laser dyes. IEEE J. Quantum Electron. 1970,6,270. 

Pumping is with a flashlamp, as in the case of the ruby laser, and a pulse energy of the order 1 J may be achieved. Frequency doubling (second harmonic generation) can provide tunable radiation in the 360-400 nm region. 

In a solid state laser, the active species is distributed throughout a solid, usually crystalline, material, although glass can also be used as a host. The lasers are robust and frequently tunable, though heat dissipation can sometimes be an issue. Certain types of solid state crystals, for example neodymium-doped yttrium aluminum garnet (Nd YAG), can be pumped by diode lasers instead of by other lasers or by flashlamps, which is often the case for other materials. Such diode-pumped, solid state systems are reliable, economical, compact, and easy to operate—in fact, many commercial systems are turnkey, needing only to be plugged in and turned on to operate. 

For time-resolved laser spectroscopy, pulsed dye lasers are of particular relevance due to their continuously tunable wavelength. They can be pumped by flashlamps T 1 ps to 1 ms), by other pulsed lasers, for example, by copper-vapor lasers (T 50 ns), excimer lasers T 15 ns), nitrogen lasers T = 2-10 ns), or frequency-doubled Nd YAG lasers T = 5-15 ns). Because of the short relaxation times t/, Xk — 10 s), no spiking occurs and the situation of Fig. 6.1a is realized (Vol. 1, Sect. 5.7). The dye laser pulses have durations between 1 ns to 500 ps, depending... 

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