Patent · US Expired

Resonator for electromagnetic waves with a stabilizer and method for stabilizing the length of the resonator

US5889803A · kind A · utility

9Cited by

6References

8Claims

0Family size

Assignee

Alcatel Alsthom · BE

Inventors

Thomas Pfeiffer · Kumhausen, DE
Gustav Veith · Hemmingen, DE

Key dates

Filing date	May 16, 1997
Grant date	Mar 30, 1999
Priority date	—
Expiry date	May 16, 2017

Classification

Technology area (CPC H)Electricity
CPC primaryH01S3/1305
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A resonator (1) for electromagnetic waves with a stabilizer can, for example, be part of a mode-coupled fiber laser. The stabilizer (2) is provided to stabilize the effective length of the resonator (1). Stabilization is accomplished in a first embodiment via two temperature controllers (3, 4) controlling the temperature of a first portion (L1) and the temperature of a second portion (L2) of the resonator (1). The temperature of the second portion (L2) is controlled as a function of an error signal generated by deviations of the resonator (1) from a nominal length. The second portion (L2) is significantly shorter than the first portion (L1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.