Page 73 - Tunable Lasers Handbook
P. 73
54 R. C. Sze and D. G. Harris
H.V.
a
FIGURE 1 7 Conventional charging circuits.
CO, lasers. The physical characteristics of this device were studied by Sze and
co-workers [70,7 11. Commercial systems today generally transfer the stored
energy to a series of peaking capacitors that physically lie very close to the dis-
charge head to minimize inductance. Thus, the energy stored in the peaking
capacitors can be deposited very quickly into the discharge. Figure 17 shows
typical cammercial circuits used today for the pulse power where there is a sim-
ple storage capacitor and an L-C inversion storage system. The inductance to
ground is a large inductance to allow dc charging of the capacitors and the
inductances in the loop are a result of the physical constraints of the discharge
head and components.
b
FIGURE 1 8 Preionization circuits. (a) vuv arc preionization. (b) Corona preionization.
