Wide band AC balanced homodyne detection of weak coherent pulses

被引：10

作者：

Jiang, S

Machida, S

Takiguchi, Y

Cao, H

Yamamoto, Y

机构：

[1] NTT, Musashino R&D Ctr, ERATO JST Yamamoto Quantum Fluctuat Project, Tokyo 180, Japan

[2] NTT, Basic Res Lab, Atsugi, Kanagawa 243, Japan

[3] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

来源：

OPTICS COMMUNICATIONS | 1998年 / 145卷 / 1-6期

关键词：

high sensitivity; femtosecond pulses; AC balanced homodyne detection; exciton-polariton oscillation in microcavity;

D O I：

10.1016/S0030-4018(97)00428-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A wide band AC balanced homodyne detection technique was applied to measure the amplitude of coherent pulses. The ultimate sensitivity given by a peak signal to noise ratio (S/N) = 1 of our system is estimated to be about 0.25 fW (3.3 X 10(-24) J/pulse or a photon number 1.25 X 10(-5) photons/pulse). As a demonstration for probing very weak ultrafast coherent optical processes, an exciton-polariton oscillation in a GaAs single quantum well microcavity was observed up to nine oscillation periods. (C) 1998 Elsevier Science B.V.

引用

收藏

页码：91 / 94

页数：4

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