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      1.06μm-1.35μm coherent pulse generation by a synchronously-pumped phosphosilicate Raman fiber laser

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      Author(s)
      Elahi, Parviz
      Makey, Ghaith
      Turnalı, Ahmet
      Tokel, Onur
      İlday, Fatih Ömer
      Date
      2017
      Source Title
      Proceedings of the European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, CLEO/Europe - EQEC 2017
      Publisher
      OSA
      Language
      English
      Type
      Conference Paper
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      Abstract
      Summary form only given. Rare-earth-doped fiber lasers are attractive for microscopy and imaging applications and have developed over the past decades rapidly. They are unable to cover near-infra-red region entirely and therefore Raman and parametric process are promising for producing new wavelengths which are out of emission band of the current fiber lasers. Here, we demonstrate a synchronously-pumped Raman laser system for producing coherent signals spanning from 1.06 μm to 1.35 μm. The laser system comprises a passively-mode-locked oscillator, two stages of amplifier and a phosphosilicate Raman oscillator. The schematic of experimental setup is shown in Fig. 1(a). A mode locked oscillator operating at 37 MHz is using as a seed source. The output pulse duration and central wavelength are 6 ps and 1065 nm, respectively. 6 mW output from oscillator is launched to pre amplifier comprises 85-cm long Yb 401-PM pumped by a single mode diode through a PM wavelength division multiplexer (WDM). The power amplifier consists of a 3.5-m long Yb 1200-DC-PM with 6 μm core diameter and 125 μm cladding diameter pumped by a temperature stabilized, high power multimode diode laser via a multimode pump-signal combiner (MPC). A 30/70 coupler is employed for delivering pump signal at 1060 nm to the Raman oscillator comprises 4.2-m long ph-doped fiber. To synchronize pump and Raman and achieve coherent pulses, we adjust the length of cavity by a precise translation stage. By using proper filter inside the Raman cavity, different wavelengths are achieved.
      Keywords
      Silicon
      Measurement by laser beam
      Laser beams
      Fiber lasers
      Oscillators
      Laser excitation
      Stimulated emission
      Permalink
      http://hdl.handle.net/11693/37666
      Published Version (Please cite this version)
      https://doi.org/10.1109/CLEOE-EQEC.2017.8087001
      Collections
      • Department of Electrical and Electronics Engineering 4012
      • Department of Physics 2551
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