Patent · US Expired

Rare earth ion doped CW cascade fiber laser

US5313477A · kind A · utility

11Cited by
3References
23Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 30, 1992
Grant dateMay 17, 1994
Priority date—
Expiry dateOct 30, 2012

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH01S3/176
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A continuous wave(CW) activator ion doped fiber laser is presented which lases at a normally self-terminating laser transition at a slope efficiency greater than that achieved by a self-terminating fiber laser. Two laser transitions, one corresponding to a self-terminating laser transition and the other to a transition out of the lower level of the self-terminating transition, are simultaneously stimulated in the activator ion doped fiber. Through simultaneous lasing of the two wavelengths corresponding to these transitions, the lower level of the self-terminating transition is sufficiently depopulated so that CW operation is achieved.

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