Low noise chirped pulse mode-locked laser using an intra-cavity Fabry-Perot etalon

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Mandridis D., Williams C., ÖZDÜR İ. T., Delfyett P. J.

OPTICS EXPRESS, vol.19, no.10, pp.8994-8999, 2011 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 10
  • Publication Date: 2011
  • Doi Number: 10.1364/oe.19.008994
  • Journal Name: OPTICS EXPRESS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.8994-8999
  • Abdullah Gül University Affiliated: No


This work presents an extensive investigation of the performance characteristics of a semiconductor-based Theta cavity design laser with an intra-cavity Fabry-Perot etalon operating at 100 MHz repetition rate. The Theta laser being an external cavity harmonically mode-locked semiconductor laser exhibits supermode noise that impairs its performance. A fiberized Fabry-Perot periodic filter inserted within the Theta laser cavity mitigates the contribution of the supermode noise to the pulse-to-pulse energy variance by 20 times. The laser has both a compressed output with picosecond pulse duration and a uniform intensity quasi-CW linearly chirped pulse output with 10 nm bandwidth. Long-term stability is attained by referencing the cavity length to the etalon using an intra-cavity Hansch-Couillaud locking scheme. (C) 2011 Optical Society of America