Directly diode-pumped, Kerr-lens mode-locked, few-cycle Cr:ZnSe oscillator.
Opt Express
; 27(17): 24445-24454, 2019 Aug 19.
Article
em En
| MEDLINE
| ID: mdl-31510333
ABSTRACT
Lasers based on Cr2+-doped II-VI material, often known as the TiSapphire of the mid-infrared, can directly provide few-cycle pulses with octave-spanning spectra, and serve as efficient drivers for generating broadband mid-infrared radiation. It is expected that the wider adoption of this technology benefits from more compact and cost-effective embodiments. Here, we report the first directly diode-pumped, Kerr-lens mode-locked Cr2+-doped II-VI oscillator pumped by a single InP diode, providing average powers over 500 mW and pulse durations of 45 fs - shorter than six optical cycles at 2.4 µm. These correspond to a sixty-fold increase in peak power compared to the previous diode-pumped record, and are at similar levels with respect to more mature fiber-pumped oscillators. The diode-pumped femtosecond oscillator presented here constitutes a key step toward a more accessible alternative to synchrotron-like infrared radiation and is expected to accelerate research in laser spectroscopy and ultrafast infrared optics.
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MEDLINE
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En
Ano de publicação:
2019
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Article