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Published November 2013 | public
Journal Article

Five-cycle pulses near λ = 3 μm produced in a subharmonic optical parametric oscillator via fine dispersion management

Abstract

Five‐cycle (50 fs) mid‐IR pulses at 80‐MHz repetition rate are produced using a degenerate (subharmonic) optical parametric oscillator (OPO), synchronously pumped by an ultrafast 1560‐nm fiber laser. The effects of cavity dispersion and the length of a periodically poled lithium niobate (PPLN) gain element on the output spectrum and pulse duration are investigated by taking advantage of a very broad (∼ 1000 cm^(−1)) gain bandwidth near the 3.1‐μm OPO degeneracy point. A new method of assessing the total OPO group delay dispersion across its entire spectrum is proposed, based on measuring spectral signatures of trace amounts of molecular gases injected into the OPO cavity.

Additional Information

© 2013 by Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. Issue Online 06 November 2013; Version of Record online: 08 October 2013; Manuscript accepted: 16 September 2013; Manuscript revised: 27 August 2013; Manuscript received: 02 August 2013. Funding Information: US Office of Naval Research; NASA; Air Force Office of Scientific Research; Agilent Technologies; Stanford Medical School; Stanford Woods Institute; Sanofi Aventis.

Additional details

Created:
August 22, 2023
Modified:
October 18, 2023