IMPROVED MID-IR LASER FOR GENERATION OF ULTRASOUND
摘要
<p>A compact high average power mid infrared range laser for ultrasound inspection. The laser comprises one of a Nd:YAG or Yb:YAG laser pumped by a diode at 808 nm to produce a 1 micron output beam. The 1 micron output beam is directed to an optical parametric oscillator where the beam wavelength is converted to 1.94 microns and conveyed to a mid infrared emission head. The emission head comprises one of a Ho:YAG or Ho:YLG laser optically coupled with a second optical parametric oscillator. The second optical parametric oscillator forms a generation output beam for creating ultrasonic displacements on a target. The generation output beam wavelength ranges from about 3 to about 4 microns, and can be 3.2 microns.</p>
申请公布号
EP2286202(A1)
申请公布日期
2011.02.23
申请号
EP20090747556
申请日期
2009.05.14
申请人
LOCKHEED MARTIN CORPORATION
发明人
FILKINS, ROBERT;DEATON, JOHN, B.;LORRAINE, PETER, W.;DRAKE, THOMAS, E.;DUBOIS, MARC