AI Article Synopsis
- A millimeter-sized whispering-gallery resonator made from neodymium-doped lithium niobate can both lase and perform self-frequency doubling.
- A simple and inexpensive 808-nm laser diode is used to pump the neodymium ions, leading to laser output around 1.08 μm and producing green light through frequency doubling.
- This innovative technique is a first for combining lasing and frequency conversion in one high-Q resonator and could be applied to various materials and nonlinear optical processes.
Article Abstract
Lasing and self-frequency doubling are achieved in a millimeter-sized laser-active whispering-gallery resonator made of neodymium-doped lithium niobate. A low-cost 808-nm laser diode without external frequency stabilization is sufficient to pump the neodymium ions. Laser oscillation around 1.08 μm drives a frequency-doubling process within the same cavity providing green light. The electrical-optical efficiency of the system reaches up to 2×10. To the best of our knowledge, this is the first demonstration of combining lasing and χ frequency conversion in a single high-Q whispering-gallery resonator. This approach is general and can be applied to other materials and other nonlinear optical processes.
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| http://dx.doi.org/10.1364/OL.42.002627 | DOI Listing |
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