Sensitivity improvement of TAMA300 gravitational-wave detector by developing next-generation interferometer technology

本研究旨在采用共振边带提取（RSE）方案，实现日本引力波探测器LCGT的灵敏度增强。在过去三年里，立法会取得了以下成绩，并取得了稳步发展：(1)数字反射镜控制；(2)高增益循环控制；(3)调制和解调系统的开发；(4)避免反射镜对准信号的退化；(5)可变观测波段设计。

This research aims to realize a sensitivity enhancement in Japanese gravitational-wave detector LCGT by adopting a resonant sideband extraction (RSE) scheme. The following achievements in the past three years were made and bring about a steady progress for the LCGT ; (1) Digital mirror controls, (2) High-gain recycling control, (3) Developing of the modulation and de-modulation systems, (4) Avoidance of degenerations of the mirror alignment signals, and (5) Variable observational-band design.