Laser-Inscribed Diamond Waveguide Resonantly Coupled to Diamond Microsphere

Molecules

Ali Serpengüzel¹  Nurperi Yavuz¹  HüseyinOzan Ҫirkinoğlu¹  MustafaMert Bayer¹  Vibhav Bharadwaj²  Argyro Giakoumaki²  ShaneM. Eaton²  Roberta Ramponi²  Thien Le Phu² 

[1] Department of Physics, Microphotonics Research Laboratory, Koç University, Rumelifeneri Yolu, Sarıyer, 34450 Istanbul, Turkey;IFN (Institute for Photonics and Nanotechnologies)—CNR, Piazza Leonardo da Vinci 32, 20133 Milano, Italy;

关键词: microcavities;    optical resonators;    waveguides;    laser material processing;    fiber optics;    infrared;   

DOI  :  10.3390/molecules25112698

来源: DOAJ

【 摘 要 】

An all-diamond photonic circuit was implemented by integrating a diamond microsphere with a femtosecond-laser-written bulk diamond waveguide. The near surface waveguide was fabricated by exploiting the Type II fabrication method to achieve stress-induced waveguiding. Transverse electrically and transverse magnetically polarized light from a tunable laser operating in the near-infrared region was injected into the diamond waveguide, which when coupled to the diamond microsphere showed whispering-gallery modes with a spacing of 0.33 nm and high-quality factors of 10⁵. By carefully engineering these high-quality factor resonances, and further exploiting the properties of existing nitrogen-vacancy centers in diamond microspheres and diamond waveguides in such configurations, it should be possible to realize filtering, sensing and nonlinear optical applications in integrated diamond photonics.

【 授权许可】

Unknown