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Ultra-high-speed high-resolution laser lithography for lithium niobate integrated photonics

  • Jinming Chen
  • , Zhaoxiang Liu
  • , Lvbin Song
  • , Chao Sun
  • , Guanhua Wang
  • , Ya Cheng*
  • *Corresponding author for this work
  • East China Normal University
  • CAS - Shanghai Institute of Optics and Fine Mechanics

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Photolithography assisted chemo-mechanical etching (PLACE), a technique specifically developed for fabricating high-quality large-scale photonic integrated circuits (PICs) on thin-film lithium niobate (TFLN), has enabled fabrication of a series of building blocks of PICs ranging from high-quality (high-Q) microresonators and low-loss waveguides to electrooptically (EO) tunable lasers and waveguide amplifiers. Aiming at high-throughput manufacturing of the PIC devices and systems, we have developed an ultra-high-speed high-resolution laser lithography fabrication system employing a high-repetition-rate femtosecond laser and a high-speed polygon laser scanner, by which a lithography fabrication efficiency of 4.8 cm2/h has been achieved at a spatial resolution of 200 nm. We demonstrate wafer-scale fabrication of TFLN-based photonic structures, optical phase masks as well as color printing.

Original languageEnglish
Title of host publicationFrontiers in Ultrafast Optics
Subtitle of host publicationBiomedical, Scientific, and Industrial Applications XXIII
EditorsPeter R. Herman, Roberto Osellame, Adela Ben-Yakar
PublisherSPIE
ISBN (Electronic)9781510659278
DOIs
StatePublished - 2023
EventFrontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII 2023 - San Francisco, United States
Duration: 29 Jan 202331 Jan 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12411
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceFrontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIII 2023
Country/TerritoryUnited States
CitySan Francisco
Period29/01/2331/01/23

Keywords

  • femtosecond laser micromachining
  • photolithography
  • photonic integrated circuit
  • thin film lithium niobate

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