PHOTOTROPIC Q-SWITCH PAN FOR LASERS Russian patent published in 2001 - IPC

FIELD: optomechanical industry, laser engineering; nonlinear absorbing parts used as passive laser Q-switches and isolators. SUBSTANCE: pan has two plane-parallel windows, stiff spacer ring made of material inert to working fluid, and flexible packing assemblies in the form of rings. Spacer ring is, essentially, separator provided with holes uniformly arranged over circumference and used to receive optical inserts; sealing cup is inserted between flexible packing assemblies placed in center of generatrix and windows; ridges are made on sealing surfaces of cup under flexible packings. Working zone of pan is filled with fluid through holes made in one of windows. Proposed design provides for minimal desired gap of 0.5-2.0 mm. Minimal strain of windows during their packing ensures divergence of beam passed through fluid layer in pan within 5•10^-4 rad. EFFECT: improved packing design and mechanical endurance; reduced gap and divergence of beam passed through fluid. 1 dwg