Browse Prior Art Database

High Repitition Rate Plastic Dye Q Switch

IP.com Disclosure Number: IPCOM000080242D
Original Publication Date: 1973-Nov-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Kirk, JP: AUTHOR

Abstract

In applications requiring high-repetition rate Q-switching, a plastic dye Q-switch tends to degrade. Described is a rotatable plastic dye Q-switch over which the degrading effects of the laser light can be distributed, thereby imparting a longer life to the device.

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High Repitition Rate Plastic Dye Q Switch

In applications requiring high-repetition rate Q-switching, a plastic dye Q- switch tends to degrade. Described is a rotatable plastic dye Q-switch over which the degrading effects of the laser light can be distributed, thereby imparting a longer life to the device.

Fig. 1 shows the saturable absorber Q-switch dye such as is disclosed in U.
S. Patent 3,668,420, formed in the shape of a circular disk 1 which is mounted with its rim within the laser cavity 2, so that it Q-switches the laser 3. The disk 1 is rotatably mounted in the housing 5 along the axis 4 and can be driven by magnetic clutch 6. Individual portions 7 of the Q-switch material on the disk 1 shown in Fig. 2, are exposed to does of laser radiation well below the damage threshold to the switching material. The disk may be immersed in a liquid at a point off-axis from the laser cavity 2, to conduct away heat generated in the Q- switching medium.

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