可視域デュアル・ホモダイン検知システム

Abstract

A dual-homodyne detection system operating in the optical regime is fabricated, which can measure asymmetric power spectral distribution of the scattered radiations from plasmas. The principle of the detection system is described briefly, and validity of the operation of the system is demonstrated, using a 532nm, 10mW, single mode solid-state laser as an incident radiation. A part of the incident radiation is frequency-shifted approximately by 30MHz using an acousto-optical device, and utilized as a pseud scattered radiation.