PPLN Chips

Electro-optics

HC Photonics PPLN Chips are nonlinear optical crystal chips made from periodically poled lithium niobate (PPLN) and related materials, designed for efficient frequency conversion of laser light.

PPLN chips enable efficient nonlinear frequency mixing — including second‑harmonic generation (SHG), sum‑frequency generation (SFG), and various down‑conversion processes — across a wide spectral range from visible to mid‑infrared wavelengths.

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Green Architecture

Evermind™ template is crafted like sustainable structures — clean, scalable, and built to last.

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Every layout and component is tuned with variables and pixel-perfect details, so your brand stands on solid ground.

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From nature-inspired transitions to fluid page structures, Evermind™ feels alive yet quietly sophisticated.

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What is a PPLN chip and how does it work?

A Periodically Poled Lithium Niobate (PPLN) chip uses alternating domain orientations engineered with a specific poling period to achieve quasi-phase-matching for efficient nonlinear frequency conversion.

What nonlinear processes are PPLN chips used for?

PPLN chips are used for second harmonic generation (SHG), sum-frequency generation (SFG), difference-frequency generation (DFG), and optical parametric oscillation (OPO) across a range of wavelengths.

What is the advantage of PPLN over bulk nonlinear crystals?

PPLN enables quasi-phase-matching, which is more flexible than birefringent phase-matching and allows access to the largest nonlinear coefficient of lithium niobate (d33), significantly improving conversion efficiency.