Description
Generation was obtained at two transitions of the Dy3+ 6H11/2 — 6H13/2 and 6H9/2 — 6H11/2 ion according to a cascade scheme.
The pumping was carried out by the YAG-Nd3+ laser at a wavelength of 1.38 microns. Measurement of the lifetime of levels 6H9/2, 6H11/2 and 6H13/2 showed that it is equal to 160 microseconds, 2 ms and 5.6 ms. This means that the laser transitions 6H11/2 — 6H13/2 and 6H9/2 — 6H11/2 are self-limited. Generation develops first at the 6H11/2 — 6H13/2 junction, and then with increasing pumping energy at the 6H9/2 — 6H11/2 junction.
Generation is achieved simultaneously on six lines: three in the area of 4.38–4.7 microns and three in the area of 5.2–5.5 microns.
A pulsed and continuous generation mode is obtained. The pulse energy was 30 MJ with a differential efficiency of 8%. The duration of the generation pulses reached 1.5 ms.
The PbGa2S4:Dy3+ laser material was highly appreciated by the world scientific community, was noted in the article "Fifty years of advances in solid-state laser materials", G. Boulon, Optical materials 34 (2012), 499-512, and was among the world's best achievements.
PbGa2S4:Dy3+ Crystal: Efficient Dual Transition Laser Generation in the Mid-IR Range
Specifications
Crystal Type: | Not Specified |
---|---|
Phase Mathcing Type: | Not Applicable |
Mounting: | Not Specified |
Width: | 10 mm |
Height: | 10 mm |
Length: | 10 mm |
Flatness: | <= Lambda/6 |
Surface Quality (Scratch-Dig): | Not Specified |
AR Coating: | Not Specified |
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