公开(公告)号：US3860880A

公开(公告)日：1975-01-14

申请号：US36140373

申请日：1973-05-18

Applicant: CALIFORNIA INST OF TECHN

Inventor： YARIV AMNON ,  ARMSTRONG DESMOND R

IPC: H01J25/38 ,  H03F3/58

CPC classification number: H01J25/38

Abstract: A tunable travelling wave optical device consists of a dielectric optical waveguide with a top surface, which is periodically corrugated with a corrugation periodicity, L. At least the corrugated top surface is in an evacuated envelope wherein an electron beam with an adjustable electron velocity, ve is formed. The electron beam propagates in close proximity to and in a direction parallel to the direction of propagation of an optical beam through the guide. The electron velocity is adjusted to be greater than but on the order of the phase velocity of the first spatial harmonic generated in the corrugated waveguide. The wavelength lambda of the optical beam which is amplifiable by the device, or is produced therein when the latter acts as an oscillator, is substantially equal to c/ve L, c being the speed of light.

Abstract translation: 可调谐行波光学器件由具有顶表面的电介质光波导构成，其波纹周期为周期波形。至少波纹顶表面处于抽真空的外壳中，其中具有可调电子速度的电子束 形成了。 电子束在与光束通过引导件的传播方向平行的方向上并且在平行的方向上传播。 电子速度被调整为大于但在波纹波导中产生的第一空间谐波的相位速度的数量级。 可以由器件放大的光束的波长λ或者当后者用作振荡器时产生的光束的波长λ基本上等于c / ve L，c是光速。