Doppler frequency up conversion of electromagnetic waves in a slotline on an optically excited silicon substrate

被引：14

作者：

Bae, Jongsuck ^{[1
]}

Xian, Yuan Jun ^{[1
]}

Yamada, Sho ^{[1
]}

Ishikawa, Ryo ^{[2
]}

机构：

[1] Nagoya Inst Technol, Dept Engn Phys Elect & Mech, Showa Ku, Nagoya, Aichi 4668555, Japan

[2] Univ Electrocommun, Dept Informat & Commun Engn, Tokyo 1828585, Japan

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 09期

关键词：

Doppler effect; microwave frequency convertors; optical arrays; optical fibres; plasma boundary layers; plasma production by laser; relativistic plasmas; slot lines; solid-state plasma; IONIZATION FRONT; RADIATION;

D O I：

10.1063/1.3095846

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Doppler frequency up conversion of microwaves in a slotline on an optically excited silicon substrate was experimentally observed. An array of 24 optical fibers with different lengths was used to effectively tilt the wave front of a 532 nm neodymium-doped yttrium aluminum garnet laser beam with a pulse duration of 33 ps. The tilted laser beam produced electron-hole surface plasma whose boundary moved at a relativistic velocity of about c/3.4 (c is the speed of light) along the slotline. The experiments showed that microwaves reflected at the moving boundary of the plasma in the slotline are converted to millimeter waves with a frequency up conversion ratio of 3.82.

引用

页数：3