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Tunable ultraviolet vortex source based on a continuous-wave optical parametric oscillator
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DOI：10.1364/OL.44.004694.png)
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We report a continuous-wave (cw) optical parametric oscillator (OPO) generating optical vortices tunable in the ultraviolet (UV). Based on MgO: sPPLT as the nonlinear crystal, the singly resonant OPO is pumped by a cw vortex beam in the green, and deploying intracavity sum-frequency generation (SFG) between the undepleted pump and the Gaussian resonant signal in the crystal of BiB3O6, it can generate optical vortices of order, l(uv) = 1 and 2, tunable across 332-344 nm in the UV with a maximum power of 12 mW. Due to conservation of orbital angular momentum in the parametric process, the OPO also produces a non-resonant idler output beam in a vortex spatial profile of order l(i) = 1 and 2, identical to the pump vortex, with the signal beam in Gaussian distribution. The idler vortex is tunable across 1172 - 338 nm with maximum output power of 1.3 W. (C) 2019 Optical Society of America
Keyword:
ORBITAL ANGULAR-MOMENTUM
GENERATION
FREQUENCY
期刊
IF:
3.3
论文数:
4.0W
被引数:
7.6W
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引用论文
High-power, continuous-wave, solid-state, single-frequency, tunable source for the ultraviolet.png)
OPTICS LETTERS
OPTICS LETTERSIF3.3
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