Patent ID: 9160131
Filing Date: 2015-10-13
Classification: H01S

Abstract:
1. An optical apparatus, comprising: an optical resonator; a Ti:sapphire gain medium located within the optical resonator, the gain-medium having an excited-state lifetime of about 3.2 microseconds, the gain medium being in the form of a thin-disk having a ratio of disk diameter to disk thickness of at least five; a heat sink in thermal communication with the gain medium; a pump-laser arranged to deliver repeated pulses of radiation having a wavelength absorbed by the gain medium, wherein the pulses have a duration less than 1.0 microsecond; and a multi-pass optical arrangement for causing each of the pump laser pulses to make a plurality of incidences on the gain-medium with a fraction of the energy in the pulse being absorbed by the gain-medium on each incidence.