Coherent light generators – Particular beam control device – Q-switch
Reexamination Certificate
2007-08-21
2007-08-21
Oh Harvey, Minsun (Department: 2828)
Coherent light generators
Particular beam control device
Q-switch
Reexamination Certificate
active
10698464
ABSTRACT:
Driver for Pockels cells and using this Pockels cell within laser systemsThe driver i.e. the electrical control of the Pockels cell is modified from the standardly known H-configuration using the switches S1, S2A; S1A, S2A by adding at least one more switch (S2B; S1B; S2B). This switch can either replace the usually used recharging resistors (R2) or can be placed to these in parallel. It is also possible to use an arrangement using 4 switches (S1A, S2A, S1B, S2B) and no recharging resistors at all. Using such a driver with a Pockels cell pulses can be selected in laser systems more efficiently. Pulse sequences with well defined widths and spacing can be produced for certain application.
REFERENCES:
patent: 5361275 (1994-11-01), Opower
patent: 2001/0038074 (2001-11-01), Zhang et al.
patent: 2004/0102767 (2004-05-01), Stingl et al.
patent: 36 30 775 (1988-03-01), None
patent: WO 200228305 (2002-04-01), None
Bergmann Thorald Horst
Knappe Ralf
Harvey Minsun Oh
Roy Tod T. Van
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