Narrow linewidth injection seeded Q-Switched fiber ring laser based on a low-SBS fiber

• US 20100034221A1
• Filed: 07/01/2009
• Published: 02/11/2010
• Est. Priority Date: 01/23/2007
• Status: Abandoned Application

• Current Assignee: Neolight Technologies LLC
• Original Assignee: Neolight Technologies LLC
• Inventors: Dragic, Peter D.
• Application Number:
  US12/459,405
• Publication Number:
  US 20100034221A1
• Time in Patent Office: Days
• US Class Current: 372/6
• CPC Class Codes: H01S 2301/03 Suppression of nonlinear conversion, e.g. specific design to suppress for example stimulated brillouin scattering [SBS], mainly in optical fibres in combination with multimode pumping
• CPC Class Codes: H01S 3/06708 Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering optical fibres as passive waveguides G02B6/02
• CPC Class Codes: H01S 3/06791 Fibre ring lasers fibre laser gyrometers G01C19/72
• CPC Class Codes: H01S 3/10092 Coherent seed, e.g. injection locking
• CPC Class Codes: H01S 3/117 using intracavity acousto-optic devices
• CPC Class Codes: H01S 3/1608 erbium

Abstract

A narrow linewidth injection-seeded Q-switched fiber ring laser based on a low-SBS optical fiber. High peak powers are achieved through the use of a single-clad erbium doped fiber with an acoustic waveguide. 12.5 μJ per pulse (250 ns pulse width) is achieved before a weakened form of stimulated Brillouin scattering appears. This laser has the potential to scale to very high power in a low-SBS dual clad fiber.

Claims

1. A narrow-linewidth injection seeded Q-switched fiber ring laser comprising;

a low-SBS Er doped fiber.

2. The laser of claim 1 wherein the laser provides 12.5 μ

J per pulse (250 ns pulse width).

3. The laser of claim 1 wherein the laser is utilized as a saturating master oscillator for a high power low-SBS dual-clad fiber amplifier or stand-alone transmitter for micropulse lidar applications.