公开(公告)号：US3842289A

公开(公告)日：1974-10-15

申请号：US36153673

申请日：1973-05-18

Applicant: CALIFORNIA INST OF TECHN

Inventor： YARIV A ,  SOMEKH S

IPC: G02F1/377 ,  H03B19/00 ,  H03F7/04

CPC classification number: G02F1/3775 ,  H03B19/00

Abstract: A phase matched thin film waveguide supportive of electromagnetic wave energy having angular frequencies is disclosed. In one embodiment, the waveguide includes a sequence of strips each of length A/2 in the direction of wave energy propagation and spaced apart from one another a distance A/2, A 2 pi / Delta Beta , where Delta Beta is the phase constant difference required to satisfy the relationship Beta 1 + Beta 2 Beta 3 + Delta Beta , Beta 1, Beta 2 and Beta 3 being, to a first order of approximation, the phase constants respectively of the wave energy. In other embodiments, the spaces between the strips are filled with materials whose nonlinear optical coefficient is either zero or different from the nonlinear optical coefficient of the spaced apart strips. The filling material''s index of refraction is substantially equal to that of the spaced apart strips.

Abstract translation: 公开了一种支持具有角频率的电磁波能量的相位匹配薄膜波导。 在一个实施例中，波导包括在波能量传播方向上每个长度为A / 2的条带的序列，彼此间隔开距离A / 2，A =2π/ DELTA，其中DELTAβ是相位 满足β1 +β2 =β3 + DELTAβ，β1，β2和β3的关系所需的恒定差为分别为波能量的相位常数的一阶近似。 在其他实施例中，条带之间的空间用非线性光学系数为零或不同于间隔开的条的非线性光学系数的材料填充。 填充材料的折射率基本上等于间隔开的条的折射率。