Mid-IR waveguides and beamsplitters inside IG2 by ultrafast laser inscription for astrophotonics

Wendwesen Gebremichael; Derek Oliwa; Wei Hu; Christophe Dorrer; Jie Qiao

doi:10.1117/12.2650696

17 March 2023 Mid-IR waveguides and beamsplitters inside IG2 by ultrafast laser inscription for astrophotonics

Wendwesen Gebremichael, Derek Oliwa, Wei Hu, Christophe Dorrer, Jie Qiao

Proceedings Volume PC12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII; PC1240807 (2023) https://doi.org/10.1117/12.2650696
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We investigated femtosecond laser inscription of IG2 waveguides and photonic structures for mid-infrared applications. 1 x 4 beamsplitters are realized, achieving normalized splitting ratios of more than 90% among the four arms. In addition, both fundamental mode and multimode guiding in the mid-IR regime at 4.55 µm are demonstrated. The Mid-IR waveguiding properties at 4.55 µm will be presented for both single-mode and multimode waveguides with as low as 0.8 dB/cm propagation loss for the single-mode guiding and controllable mode field diameter. This work is supported by the US National Aeronautics and Space Administration under STTR Contracts 80NSSC20C0027, 80NSSC21C0638, and 80NSSC22PA936.

Conference Presentation

Citation Download Citation

Wendwesen Gebremichael, Derek Oliwa, Wei Hu, Christophe Dorrer, and Jie Qiao "Mid-IR waveguides and beamsplitters inside IG2 by ultrafast laser inscription for astrophotonics", Proc. SPIE PC12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII, PC1240807 (17 March 2023); https://doi.org/10.1117/12.2650696

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