Narrow linewidth on-chip III-V/TFLT laser
We report a narrow-linewidth laser based on thin-film lithium tantalate (TFLT). The laser is composed of an InP reflective semiconductor optical amplifier gain chip hybrid integrated with a TFLT waveguide external cavity cladded with a silicon oxide extended Bragg grating. The single-frequency laser device achieves an on-chip output power of approximately 26 mW and an intrinsic Lorentzian linewidth of ~94 Hz. These results highlight the great potential of TFLT for integrated photonic laser applications, enabling high-coherence and high-power laser sources in a compact platform.
Authors
- Jeremy Staffa (ORCID: https://orcid.org/0000-0003-2140-0516)
- Yueteng Zhang (ORCID: https://orcid.org/0000-0002-6882-196X)
- Sanket Bohora
- Zhengdong Gao
- Shixin Xue
- Raymond Lopez‐Rios (ORCID: https://orcid.org/0000-0002-3569-9048)
- Mingxiao Li (ORCID: https://orcid.org/0000-0003-4951-6887)
- Qili Hu (ORCID: https://orcid.org/0000-0002-2362-7936)
- John E. Bowers (ORCID: https://orcid.org/0000-0003-4270-8296)
- Qiang Lin (ORCID: https://orcid.org/0000-0001-8483-0754)
Institutions
- University of California, Santa Barbara (US)
- Instituto de Óptica "Daza de Valdés" (ES)
- University of Rochester (US)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-06-18
- DOI
- https://doi.org/10.1364/ol.566695
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Defense Advanced Research Projects Agency