METROLOGY AND LASER INTEGRATION

Leveraging low-loss SiN PIC’s to build ultra-narrow linewidth and tunable lasers

LIGENTEC delivers advanced, custom photonic integrated circuit solutions for narrow-linewidth and tunable lasers. Combining a IIII-V semiconductor active gain section and an ultra-low loss tunable silicon nitride circuit, hybrid external cavity lasers with unprecedented wavelength precision, tunability, and output power can be engineered, transcending standard off-the-shelf offerings.
The combination of SiN’s large transparency window, excellent power handling, and ultra-low propagation losses make them ideal for various applications across different spectral bands.

Key Features

• High output power – The excellent power-handling capabilities of SiN support high optical output powers, with demonstrations displaying over 200 mW from a single butterfly-packaged laser device1.
• Ultra-narrow linewidth – Ultra-low propagation losses down to the dB /m level greatly increase the photon lifetime in the laser cavity and hence reduce the optical linewidth. Dive below the kHz-level through self-injection locking2,3.
• Wide tunability – Tunable Vernier cavity filters, with thermo-optic or electro-optic modulators, allow ultrawide tuning ranges of 170 nm and beyond4. Our undercut heater technology offers efficient thermo-optic actuation, enabling cavity tuning with only 1/10th of the electrical power compared to competing thermo-optic phase shifters.
• Thermal stability – Unlike most other integrated photonic platforms, SiN’s low thermo-optic coefficient ensures unprecedented thermal stability, warranting state-of-the-art reliability and precision in harsh environments.
• Scalability – Our PIC’s are manufactured in a 200 mm automotive-qualified fab. Seeking an industrial partner to bring your product to the market at volume? Look no further, LIGENTEC is here to support.

Elevate your laser technology with LIGENTEC. Contact our experts today to transform your technical vision into reality.

Available wavelengths

The broad transparency window of silicon nitride allows operation across a wide wavelength range from the visible to the mid-infrared. This unmatched versatility enables the development of lasers tailored to specific application needs, including:

• C, O and L-band band tunable lasers for communication and computing applications.
• Long-wavelength tunable lasers, operating in the 2-3 µm spectral band for environmental- and industrial gas sensing applications.
• Lasers for the (near)-visible spectrum to serve AR/VR and metrology, as well as medical and life science applications.

The hybrid external cavity laser concept is wavelength agnostic. Contact our experts today to transform your technical vision into reality.

Applications
LIGENTEC supports a comprehensive range of wavelengths, enabling solutions for the most specialized applications including metrology, LiDAR, sensing, communication, and computing. Collaborate with our engineering team to customize wavelength options and specifications perfectly aligned with your project needs. Access our comprehensive publication library for public in-depth technical references.

Ready to integrate SiN photonics into your system? Contact us to discuss your application — from MPW prototyping to volume production.