The University of Osaka · Physics and Astronomy
Professor Masashi Yoshimura's research lab specializes in nonlinear optics and advanced functional materials, with a primary focus on the development and characterization of novel optical crystals for frequency conversion applications. The lab investigates phase-matching properties and nonlinear optical behaviors in complex oxide crystals such as YCOB and its solid solutions, enabling efficient third-harmonic generation and other frequency conversion processes. Key research directions include crystal growth, optical property engineering, and the design of noncritically phase-matched materials for practical laser systems.
Figures are computed from collected data and may differ slightly.
A nonlinear optical crystal YCa(4)O(BO(3))(3) (YCOB) is phase matchable for third-harmonic generation (THG) of a Nd:YAG laser by type I mixing between 1.064 and 0.532mum . By partial substitution of Gd for Y in YCOB, a solid solution Gd(x)Y(1-x)Ca(4)O(BO(3))(3) gradually changes the phase-matching angles of THG to (theta, ø)=(90( degrees ), 90 ( degrees )) . We present the properties of noncritically phase-matched THG in Gd(x) Y(1-x)Ca(4)O(BO(3))(3) (x=0.28) .
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