Single-Nanosecond-Pulse Lasing in Heavily Doped Fe:ZnSe

Single-Nanosecond-Pulse Lasing in Heavily Doped Fe:ZnSe

We investigated room-temperature pulsed lasing in heavily doped Fe:ZnSe single crystals. The active elements were pumped by a Q-switched Cr 3+ :Yb 3+ :Ho 3+ :YSGG laser operating at 2.87 μm. Our results show that the generation of short laser pulses has a deep high-frequency modulation associated wi...

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Bibliographic Details
Published in:IEEE photonics journal Vol. 13; no. 1; pp. 1 - 7
Main Authors: Antonov, Vladimir A., Bukin, Vladimir V., Dolmatov, Timophey V., Firsov, Konstantin N., Gavrishchuk, Evgeny M., Kononov, Igor G., Obraztsov, Petr A., Podlesnykh, Sergey V., Ponarina, Mariya V., Sirotkin, Anatoly A., Zhavoronkov, Nikolay V.
Format: Journal Article
Language:English
Published: Piscataway IEEE 01-02-2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Crystals
Fe:ZnSe laser
Ferrous ions
Frequency modulation
Holmium
Ions
Laser excitation
Laser modes
Lasers
Lasing
Mid-infrared radiation
nanosecond pulse
Nanosecond pulses
Optical filters
Pulse duration
Pump lasers
Room temperature
Single crystals
Zinc selenide
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Summary:We investigated room-temperature pulsed lasing in heavily doped Fe:ZnSe single crystals. The active elements were pumped by a Q-switched Cr 3+ :Yb 3+ :Ho 3+ :YSGG laser operating at 2.87 μm. Our results show that the generation of short laser pulses has a deep high-frequency modulation associated with relaxation dynamics in Fe:ZnSe. The lasing regime obtained in this study provides a straightforward way to generate mid-IR single nanosecond pulses at moderate pump energies. Moreover, we found a relation between the lasing pulse duration and the concentration of Fe 2+ doping ions, and we experimentally demonstrated pulse shortening in heavily doped active crystals. Single-pulse lasing with an FWHM pulse duration of ~2.8 ns was achieved in ZnSe crystals doped with 2.3 · 10 19 cm -3 Fe 2+ ions. The demonstrated single-pulse lasing regime is applicable for seeding high-power mid-IR laser systems.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2020.3046363