The RF-HHL Laser Module is a compact mid-infrared laser module offering fast amplitude modulation (AM) via a standard SMA input, providing precise control over the laser’s output power and amplitude modulation. The module is packaged in a High Heat Load (HHL) enclosure, making it ideal for demanding environments requiring efficient thermal management, and includes a thermoelectric cooler (TEC), thermistor, and collimating optics.

This laser module is highly versatile and can be configured with different laser types, including DFB lasers, high-power lasers, and comb lasers, depending on the specific needs of the application.

The RF-HHL offers an exceptional cutoff frequency at 3 dB of greater than 0.3 GHz, making it suitable for high-speed applications that require rapid modulation. The laser’s output can be modulated at frequencies far beyond traditional systems, making it ideal for real-time signal processing, gas sensing, and other high-frequency applications.

The frequency response of the RF-HHL module demonstrates outstanding high-frequency
performance. Although the nominal 3 dB cutoff is above 300 MHz, measurements show that
the amplitude modulation remains detectable well into the multi-GHz range beyond the
nominal cutoff point. Although the modulation depth gradually decreases, the system retains
more than 20 dB of dynamic range relative to the background pick-up signal.
This extended bandwidth confirms the RF-HHL’s suitability for advanced
applications requiring fast, high-frequency modulation such as free-space optical
communications, high-speed spectroscopy, and fast feedback control.