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arXiv · 2610.09435

Compact Fully Integrated Alignment-Free and Linearly Polarized Ho$^{3+}$ Single-Frequency Waveguide Laser

Jeswin Jacob·T Toney Fernandez·Dale Otten·Ori Henderson-Sapir·3 Karen Privat·David Lancaster
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Abstract

We report, for the first time, a fully integrated Ho$^{3+}$-doped fluoride glass waveguide laser incorporating a femtosecond laser-inscribed waveguide and waveguide Bragg grating. The compact 12.4 mm cavity achieves stable single-frequency lasing at 2062.21 nm with a line width of better than 5 MHz. The laser emits linearly polarized light, which is efficiently delivered through an SM1950 single-mode fiber. This alignment-free architecture provides a compact and robust platform for integrated mid-infrared single-frequency laser sources.

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Jeswin Jacob, T Toney Fernandez, Dale Otten, Ori Henderson-Sapir, 3 Karen Privat, David Lancaster. 2026-10-07. Compact Fully Integrated Alignment-Free and Linearly Polarized Ho$^{3+}$ Single-Frequency Waveguide Laser. https://arxiv.org/abs/2610.09435

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