| Autor: |
Vasilyev S, Moskalev I, Smolski V, Peppers J, Mirov M, Muraviev A, Vodopyanov K, Mirov S, Gapontsev V |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2019 May 27; Vol. 27 (11), pp. 16405-16413. |
| DOI: |
10.1364/OE.27.016405 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
