AI Article Synopsis
- A new dual wavelength Q-switched Ho3+-doped fluoride fiber laser was developed, showcasing mid-infrared capability.
- The laser produced stable pulse trains from two specific transitions, with the timing between the pulses influenced by the pump power used.
- At peak pump power, the laser achieved a 3.005 μm wavelength pulse with 29 μJ energy and 380 ns width, along with a 2.074 μm pulse featuring 7 μJ energy and 260 ns width, marking a significant advancement in fiber laser technology beyond 3 μm.
Article Abstract
A diode-cladding-pumped dual wavelength Q-switched Ho3+-doped fluoride cascade fiber laser operating in the mid-infrared is demonstrated. Stable pulse trains from the (5)I6 → (5)I7 and (5)I7 → (5)I8 laser transitions were produced, and the μs-level time delay between the pulses from each transition was dependent on the pump power. At maximum pump power and at an acousto-optic modulator repetition rate of 25 kHz, the (5)I6 → (5)I7 transition pulse operated at 3.005 μm, a pulse energy of 29 μJ, and a pulse width of 380 ns; the (5)I7 → (5)I8 transition pulse correspondingly produced 7 μJ pulse energy and 260 ns pulse width at 2.074 μm. To the best of our knowledge, this is the first demonstration of a Q-switched fiber laser operating beyond 3 μm.
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| http://dx.doi.org/10.1364/OL.37.002208 | DOI Listing |
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