Alpes Lasers Launches RF-HHL Laser Module with Modulation up to 300 MHz

St-Blaise, Switzerland – 2026 – Alpes Lasers SA, a Swiss engineering company pioneering advanced mid-infrared light sources and a leader in Quantum Cascade Laser (QCL) technology, announces the launch of its new RF-HHL Laser Module.

This new packaging option for Alpes Lasers’ flagship QCL and ICL products delivers an order-of-magnitude improvement in modulation speed compared to standard HHL packaging, enabling amplitude modulation up to 300 MHz (−3 dB cutoff).

High-Speed Modulation in a Compact HHL Platform

The RF-HHL Laser Module is a compact mid-infrared laser system designed for fast amplitude modulation (AM) via a standard SMA connector. It provides precise control of output power and modulation amplitude while maintaining the robustness and thermal performance of the proven High Heat Load (HHL) housing.

Each module integrates:

·       Thermoelectric cooler (TEC)

·       Thermistor

·       Collimating optics

·       Efficient heat management for demanding environments

The system is compatible with multiple laser configurations, including:

·       DFB lasers

·       High-power lasers

·       Comb lasers

This flexibility allows optimization according to specific application requirements.

Exceptional Frequency Response

The RF-HHL module offers a −3 dB cutoff frequency above 300 MHz, significantly extending the modulation capabilities of mid-infrared semiconductor lasers in HHL packaging.

Measured frequency response shows that amplitude modulation remains detectable well into the multi-GHz range beyond the nominal cutoff frequency. Although modulation depth decreases progressively, the system maintains more than 20 dB of dynamic range relative to background pick-up signals.

This extended bandwidth confirms the module’s suitability for high-frequency and fast-response applications.

Key Application Areas

The RF-HHL Laser Module enables new possibilities in high-speed mid-infrared photonics, including:

• High-Speed Spectroscopy

Fast modulation enhances detection sensitivity and enables rapid spectral acquisition for advanced spectroscopy systems.

• Gas Sensing and Trace Gas Analysis

Improved modulation bandwidth supports high-speed detection schemes, benefiting environmental monitoring, industrial process control, and safety systems.

• Free-Space Optical Communications

The extended frequency response supports high-bandwidth optical links in the mid-infrared.

• Real-Time Signal Processing

Rapid amplitude modulation allows dynamic system response and advanced modulation techniques.

• Fast Feedback and Control Systems

Suitable for applications requiring high-frequency modulation in closed-loop control environments.

Key Features

·       High-frequency amplitude modulation via SMA connector

·       Single-mode QCL operation

·       −3 dB cutoff frequency > 300 MHz

·       Wavelength range from 3 to 12 µm

·       Compact and robust HHL housing

·       Compatible with DFB, high-power, and comb lasers

For more information or to schedule a demonstration, please visit:
https://www.alpeslasers.ch/rf-hhl-laser-module/

Contact:
Alpes Lasers SA
Email: [email protected]
Phone: +41 32 729 95 10

© 2026 Alpes Lasers SA. All rights reserved.