Haiwei Chen, Xinyu Zhang, Zhilin Ye, Xin Chen, ChunYu Huang, Peng Zhan, Xin Ou, Shining Zhu, Xiaopeng Hu
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引用次数: 0
Abstract
Thin-film lithium tantalate (TFLT) is attracting increasing attention in nonlinear generation of visible lasers due to its large second-order nonlinearity and reduced photorefractive effect. In this Letter, we design and fabricate a periodically poled TFLT waveguide for frequency doubling of a near-infrared laser operating at around 1064 nm. Continuous-wave 1.87-mW second-harmonic green light was obtained from the TFLT waveguide, and the nonlinear conversion efficiency is about 11.7%. The periodically poled TFLT waveguide exhibits a narrow wavelength acceptance bandwidth, a large nonlinear coefficient, and a stable output in the visible. The study present in this work will pave the way for the application of TFLT in nonlinear integrated photonics.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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