Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 30, Issue 10, Pages 891-894Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2018.2822838
Keywords
Erbium glass; Laguerre Gaussian beams; passive Q-switched; vortex beams
Funding
- National Key Research and Development Program of China [2017YFB1104500]
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A compact 1535-nm Er, Yb: glass microchip vortex laser carrying orbital angular momentum (OAM) of lh is first presented to the best of our knowledge. The highest pulsed energy reaches 31.4 mu J at a repetition frequency of 250 Hz. The OAM phase singularities were confirmed by a simple self-interference pattern. The process that the LG(0,+/- 1) modes were produced by combining two orthogonal Hermite-Gaussian modes in a plane-parallel resonator was recorded. The dynamic behaviors of transverse patterns were discussed, giving a more luminous comprehension of directly generated vortex beam in solid-state oscillators.
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