Intracavity squeezing for a gravitational-wave detector

Document #:

JGW-T1215017-v1

Document type:

T

Submitted by:

Kentaro Somiya

Updated by:

Kentaro Somiya

Document Created:

15 Jun 2023, 00:49

Contents Revised:

15 Jun 2023, 00:49

DB Info Revised:

06 Jun 2025, 12:42

Abstract:

Injection of a squeezed vacuum into a gravitational-wave detector is a way to improve its shot-noise limited sensitivity without increasing the laser power. The squeezer is placed outside the detector and decreases the vacuum fluctuation in the phase quadrature. Here we propose a new scheme to utilize the squeezer. The squeezer is placed inside a cavity and decreases the vacuum fluctuation in the phase quadrature just slightly so as to realize the impedance matching, with which the shot-noise limited sensitivity can be improved much better than the conventional scheme with the squeezer outside the detector.

Files in Document:

• intra.pdf (245.9 kB)

Topics:

• Activity:R&D

Authors:

• Kentaro Somiya
• Yuki Susa
• Shinichiro Ueda

Notes and Changes:

Written in 2012 (unpublished) and uploaded to JGW-doc server in 2023.