Efficient second harmonic generation in femtosecond laser written optical waveguides on periodically poled lithium niobate

Roberto Osellame, Nicola Chiodo, Mirko Lobino, Marco Marangoni, Giulio Cerullo, Roberta Ramponi, Henry T. Bookey, Robert R. Thomson, Nicholas Psaila, Ajoy K. Kar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The authors report on the fabrication of buried waveguides in both lithium niobate and periodically poled lithium niobate. First a low insertion loss waveguide is fabricated in z-cut lithium niobate using femtosecond laser waveguide inscription. To fabricate a waveguide exhibiting both low propagation and coupling losses, we used the multiscan fabrication technique to control the size of the waveguide cross section. We measured coupling losses of 1.1 dB/facet and propagation losses as low as 0.6 dBcm-1. Optical waveguides have been also inscribed in periodically poled lithium niobate by femtosecond laser pulses with the same multiscan technique. Second harmonic generation experiments from a fundamental wavelength of 1567 nm demonstrate that the nonlinear optical coefficient in the waveguides is preserved, yielding a conversion efficiency of 18% W-1.

Original languageEnglish
Title of host publicationCommercial and Biomedical Applications of Ultrafast Lasers VIII
Volume6881
DOIs
Publication statusPublished - 2008
EventPhysics and Simulation of Optoelectronic Devices XVI - San Jose, CA, United States
Duration: 21 Jan 200824 Jan 2008

Conference

ConferencePhysics and Simulation of Optoelectronic Devices XVI
CountryUnited States
CitySan Jose, CA
Period21/01/0824/01/08

Keywords

  • Femtosecond
  • Lithim niobate
  • Micromachining
  • Periodically poled
  • Second harmonic generation
  • Ultrafast

Fingerprint Dive into the research topics of 'Efficient second harmonic generation in femtosecond laser written optical waveguides on periodically poled lithium niobate'. Together they form a unique fingerprint.

  • Cite this

    Osellame, R., Chiodo, N., Lobino, M., Marangoni, M., Cerullo, G., Ramponi, R., Bookey, H. T., Thomson, R. R., Psaila, N., & Kar, A. K. (2008). Efficient second harmonic generation in femtosecond laser written optical waveguides on periodically poled lithium niobate. In Commercial and Biomedical Applications of Ultrafast Lasers VIII (Vol. 6881) https://doi.org/10.1117/12.763115