公开(公告)号：US3835407A

公开(公告)日：1974-09-10

申请号：US36282173

申请日：1973-05-21

Applicant: CALIFORNIA INST OF TECHN

Inventor： YARIV A ,  GOVER A

IPC: H03F3/55 ,  H03F3/04

CPC classification number: H03F3/55

Abstract: A travelling wave amplifier of signals in the millimeter wavelength range consists of a monolithic solid state waveguide structure wherein space harmonics of the input electromagnetic energy wave (signals) are generated due to periodic corrugations of the guide''s top surface. The waveguide structure includes a current conductive layer supportive of a stream of electrons with an electron velocity ve, the stream of electrons being located where the amplitude of the spatial first harmonic is a maximum. The corrugation periodicity L is selected so that the equality ve K ( omega /2 pi ) L is satisified. In the equality, omega is the angular frequency of the input wave and K is a factor which is not less than and on the order of one.

Abstract translation: 毫米波长范围内的信号的行波放大器由单片固体波导结构组成，其中由于引导件顶表面的周期性波纹而产生输入电磁能波（信号）的空间谐波。 波导结构包括支撑电子流与电子速度ve的电流导电层，电子流位于空间一次谐波的振幅最大的位置。 选择波纹周期L，使得满足等式ve = K（ω/2π）L。 在等式中，ω是输入波的角频率，K是不小于或等于1的因子。

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。