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Title: Multi-octave visible to long-wave IR femtosecond continuum generated in Cr:ZnS-GaSe tandem

Journal Article · · Optics Express

We report a technique for generation of broad and coherent femtosecond (fs) continua that span several octaves from visible to long-wave IR parts of the spectrum (0.4–18 µm). The approach is based on simultaneous amplification of few-cycle pulses at 2.5 µm central wavelength at 80 MHz repetition rate, and augmentation of their spectrum via three-wave mixing in a tandem arrangement of polycrystalline Cr:ZnS and single crystal GaSe. The obtained average power levels include several mW in the 0.4–0.8 µm visible, 0.23 W in the 0.8–2 µm near-IR, up to 4 W in the 2–3 µm IR, and about 17 mW in the 3–18 µm long-wave IR bands, respectively. High brightness and mutual coherence of all parts of the continuum was confirmed by direct detections of the carrier envelope offset frequency of the master oscillator.

Research Organization:
Univ. of Alabama, Birmingham, AL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); US Department of the Navy, Office of Naval Research (ONR); Defense Advanced Research Projects Agency (DARPA); US Air Force Office of Scientific Research (AFOSR)
Grant/Contract Number:
SC0018378; N00014-15-1-2659; N00014-17-1-2705; W31P4Q-15-1-0008; FA9550-13-1-0234
OSTI ID:
1515613
Alternate ID(s):
OSTI ID: 1612963
Journal Information:
Optics Express, Vol. 27, Issue 11; ISSN 1094-4087
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (6)

Toward terawatt few-cycle pulses via optical parametric chirped-pulse amplification with oxide crystals journal January 2019
Middle-IR frequency comb based on Cr:ZnS laser journal January 2019
Phase-only pulse shaper for multi-octave light sources journal January 2020
Visible blue-to-red 10  GHz frequency comb via on-chip triple-sum-frequency generation journal January 2019
Phase-only pulse shaper for multi-octave light sources journal January 2020
Visible blue-to-red 10  GHz frequency comb via on-chip triple-sum-frequency generation journal January 2019