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Title: Switchable Q-switched and modelocked operation in ytterbium doped fiber laser under all-normal-dispersion configuration

We have constructed an Yb-doped fiber laser in all-normal-dispersion configuration which can be independently operated in Q-switched or modelocked configuration with the help of a simple fiber optic ring resonator (FORR). In the presence of FORR, the laser operates in Q-switched mode producing stable pulses in the range of 1 μs-200 ns with repetition rate in the range of 45 kHz-82 kHz. On the other hand, the laser can be easily switched to mode-locked operation by disjoining the FORR loop producing train of ultrashort pulses of ∼5 ps duration (compressible to ∼150 fs) at ∼38 MHz repetition rate. The transmission characteristics of FORR in combination with the nonlinear polarization rotation for passive Q-switching operation is numerically investigated and experimentally verified. The laser can serve as a versatile seed source for power amplifier which can be easily configured for application in the fields that require different pulsed fiber lasers.
Authors:
; ; ; ; ; ;  [1]
  1. Solid State Laser Division, Raja Ramanna Center for Advanced Technology, Indore, M.P. 452013 (India)
Publication Date:
OSTI Identifier:
22392394
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 86; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CONFIGURATION; DOPED MATERIALS; FIBERS; KHZ RANGE 01-100; LASERS; OPERATION; POWER AMPLIFIERS; PULSES; RESONATORS; SWITCHES; YTTERBIUM