Title :
Generation of GHz-ultrasound packets in water using an Er-laser
Author :
Storkel, U. ; Vodopyanov, Konstantin ; Grill, Warren
Author_Institution :
Frankfurt Univ., Germany
Abstract :
Summary form only given.A Cr,Er:YScGG laser with its wavelength of 2.8 /spl mu/m being close to the water OH-absorption band is characterized by a very small penetration length (1 /spl mu/m) and high efficiency of ultrasound excitation. We present a variety of schemes suitable for the temporally and spatially controlled excitation of gigahertz ultrasound waves.
Keywords :
laser beam effects; light absorption; submillimetre wave generation; ultrasonic waves; water; 1 mum; 2.8 mum; Cr,Er:YScGG laser; Er-laser; H/sub 2/O; OH; YScGG:Cr,Er; YScGa5O12:Cr,Er; gigahertz ultrasound waves; high efficiency; spatially controlled excitation; temporally controlled excitation; ultrasound excitation; very small penetration length; water GHz-ultrasound packet generation; water OH-absorption band; Absorption; Backscatter; Charge coupled devices; Charge-coupled image sensors; Laser beams; Light scattering; Optical fiber polarization; Optical propagation; Optical scattering; Particle scattering;
Conference_Titel :
Quantum Electronics Conference, 1998. IQEC 98. Technical Digest. Summaries of papers presented at the International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-541-2
DOI :
10.1109/IQEC.1998.680144
