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Title: All fiber passively Q-switched laser

Patent ·
OSTI ID:1179222

Embodiments relate to an all fiber passively Q-switched laser. The laser includes a large core doped gain fiber having a first end. The large core doped gain fiber has a first core diameter. The laser includes a doped single mode fiber (saturable absorber) having a second core diameter that is smaller than the first core diameter. The laser includes a mode transformer positioned between a second end of the large core doped gain fiber and a first end of the single mode fiber. The mode transformer has a core diameter that transitions from the first core diameter to the second core diameter and filters out light modes not supported by the doped single mode fiber. The laser includes a laser cavity formed between a first reflector positioned adjacent the large core doped gain fiber and a second reflector positioned adjacent the doped single mode fiber.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
9,031,098
Application Number:
13/551,762
OSTI ID:
1179222
Resource Relation:
Patent File Date: 2012 Jul 18
Country of Publication:
United States
Language:
English

References (5)

High-power all-fiber passively Q-switched laser using a doped fiber as a saturable absorber: numerical simulations journal January 2011
Yb-doped fiber laser operating near EDFA absorption band patent October 2000
Tapered fiber laser patent November 2001
Double cladding fiber and optical fiber amplifier patent January 2002
Fiber optic coupler, optical fiber useful with the coupler and/or a pump light source, and methods of coupling light patent August 2008

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