Millimeter-wave signal generation device based on difference frequency generation in a LiTaO3 rectangular waveguide
We have proposed a new DFG-based signal generation device in a LiTaO3 rectangular waveguide. 15 GHz signal was successfully generated from the fabricated device. In this paper, its application for higher-frequency signal generation is discussed.
COHERENT TUNABLE THZ-WAVE GENERATION FROM LINBO3 WITH MONOLITHIC GRATING COUPLER
Coherent THz‐wave generation is demonstrated utilizing a grating coupler fabricated on the surface of a LiNbO3 crystal pumped by a Q‐switched Nd:YAG laser. Wide tunability, sharp directivity, and high efficiency were achieved.
Laminar heat or mass transfer in rectangular channels and in cylindrical tubes for fully developed flow: comparison of solutions obtained for various boundary conditions
Abstract A comparison is made of results obtained with various boundary conditions at the wall of the channels. By comparing blood Sherwood numbers for finite wall resistance with those for constant concentration boundary condition only a small variation is found for various points along the blood channel.