Mid-IR laser for generation of ultrasound

Details Mid-IR laser for generation of ultrasound Mid-IR laser for generation of ultrasound

2008-05-15

2011-11-22

Van Roy, Tod T (Department: 2828)

Coherent light generators

Long wavelength

C372S021000, C372S069000, C702S159000

Reexamination Certificate

active

08064488

ABSTRACT:
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.

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