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Picosecond laser apparatus and methods for treating target tissues with same

  • US 9,780,518 B2
  • Filed: 03/15/2013
  • Issued: 10/03/2017
  • Est. Priority Date: 04/18/2012
  • Status: Active Grant
First Claim
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1. A method for shifting a wavelength of a subnanosecond pulse laser apparatus comprising:

  • providing a subnanosecond pulse as a pump for a laser resonator with a short roundtrip time, the laser resonator comprising an optical element, the laser resonator having a laser resonator length, wherein the optical element is a laser crystal with high absorption coefficient at the wavelength of the subnanosecond pulse, the laser crystal having a crystal length, wherein the crystal length is equal to the laser resonator length, wherein the roundtrip time of the laser resonator is substantially shorter than a pulse duration of the subnanosecond pulse that was used to pump the laser resonator; and

    generating, in the laser resonator, a subnanosecond wavelength shifted pulse having at least about 100 mj/pulse energy with a pulse duration such that a shorter subnanosecond pumping pulse used to pump the laser resonator results in a shorter generated subnanosecond pulse.

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