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US 11,791,603 B2Granted
Q-switched cavity dumped sub-nanosecond laser
AssigneeCynosure, Inc.
InventorsMirko Mirkov, Henry Zenzie
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Abstract
Apparatuses and methods are disclosed for applying laser energy having desired pulse characteristics, including a sufficiently short duration and/or a sufficiently high energy for the photomechanical treatment of skin pigmentations and pigmented lesions, both naturally-occurring (e.g., birthmarks), as well as artificial (e.g., tattoos). The laser energy may be generated with an apparatus having a resonator with a sub-nanosecond round trip time.
Claims21
A laser oscillator for generating laser energy having a pulse duration of less than 1 nanosecond comprising:
- (a) a first mirror and a second mirror within a housing, with the first mirror and the second mirror providing a sub-nanosecond round trip time for laser radiation along an axis between the first mirror and the second mirror;
- (b) an electro-optic device, a polarizer and a lasing medium positioned between the first mirror and the second mirror along the axis;
- and
- (c) a pump source operatively coupled to the lasing medium,
- (d) wherein the laser oscillator is capable of proceeding through at least three consecutive states comprising hold-off, buildup and cavity dumping.
2 more elements
Dependencies are inferred from the claim text.