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Title: Compact, All-PM Fiber Integrated and Alignment-Free Ultrafast Yb:Fiber NALM Laser With Sub-Femtosecond Timing Jitter

Journal Article · · Journal of Lightwave Technology
ORCiD logo [1];  [2];  [1];  [1];  [1];  [3];  [4];  [4];  [4];  [2];  [1]
  1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Helmholtz-Institute Jena, Jena (Germany); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
  4. Univ. of Vienna (Austria)

We report a simple and compact design of a dispersion compensated mode-locked Yb:fiber oscillator based on a nonlinear amplifying loop mirror (NALM). The fully polarization maintaining (PM) fiber integrated laser features a chirped fiber Bragg grating (CFBG) for dispersion compensation and a fiber integrated compact non-reciprocal phase bias device, which is alignment-free. The main design parameters were determined by numerically simulating the pulse evolution in the oscillator and by analyzing their impact on the laser performance. Experimentally, we achieved an 88 fs compressed pulse duration with sub-fs timing jitter at 54 MHz repetition rate and 51 mW of output power with 5.5×10-5 [20 Hz, 1 MHz] integrated relative intensity noise (RIN). Furthermore, we demonstrate tight phase-locking of the laser's carrier-envelope offset frequency ( fceo ) to a stable radio frequency (RF) reference and of one frequency comb tooth to a stable optical reference at 291 THz.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Austrian Science Fund (FWF); Austrian Federal Ministry for Digital and Economic Affairs
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1817873
Journal Information:
Journal of Lightwave Technology, Journal Name: Journal of Lightwave Technology Journal Issue: 13 Vol. 39; ISSN 0733-8724
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

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