Santec Holdings Corporation Product Lineup

Advanced digital laser control for precision and quantum applications dDLC is a next-generation digital controller designed for high-performance laser stabilization and control. By combining intuitive operability with high-performance FPGA-based signal processing, it achieves high-precision control of diode lasers in demanding applications. Furthermore, it features built-in analysis capabilities, a flexible control interface, and support for standalone operation, providing an integrated platform that comprehensively performs laser tuning, locking, and diagnostics.

Current and Temperature Control for High-Power Laser Applications The LDD series provides reliable and robust current and temperature control for high-power laser diodes and amplification systems. Designed with a focus on flexibility and reliability, it accommodates various diode types and operating conditions. With high current driving capability and configurable PID temperature control functions, it offers an optimal control platform for tapered amplifiers and high-power laser systems.

Ultra-fast feedback control for wideband laser stabilization. The FSC is a high-bandwidth PID servo controller designed for precise laser locking and narrowing of linewidth. By separating high-speed and low-speed loops in the feedback control, it achieves high-precision stabilization of laser frequency. Furthermore, its design emphasizes intuitive operability, allowing for rapid optimization of feedback parameters from the front panel, making it ideal for demanding stabilization applications.

Compact Integrated Laser Control for Embedded and Standalone Applications The mLC is a compact digital controller designed for direct integration with semiconductor lasers. With its ultra-small form factor and USB-C power supply, it enables the construction of extremely compact laser systems while maintaining high performance. It supports both integration into laser heads and standalone controller applications, providing flexible laser control solutions for research and OEM purposes.

Flexible Multi-Channel RF Signal Generation for Scalable Optical Control Systems The QRF series is a robust and cost-effective 4-channel RF synthesizer designed for general-purpose acousto-optic modulation (AOM) and optical control applications. Based on digital direct synthesis (DDS) technology, it features phase-coherent RF signal generation and built-in amplification, contributing to the simplification of system design. With flexible modulation capabilities and intuitive operability, it enables reliable scalable RF distribution in experimental setups that require multi-channel configurations.

XRF is a high-performance 2-channel RF signal source for optical and quantum experiments. It supports RF output of 20–400 MHz with a maximum of 4W per channel and can modulate frequency, amplitude, and phase over a bandwidth of up to 10 MHz. The FPGA-driven DDS architecture generates complex FM/AM/PM sequences by combining interpolation, loops, ramps, and external triggers. It can flexibly configure the RF signals necessary for direct driving of AOMs, laser stabilization, and quantum state control in a single unit. It also supports control via USB/Ethernet, facilitating integration and automation into research systems.

The construction of a laser frequency stabilization system requires multiple functions such as RF signal sources, demodulation circuits, and filters. The PLM is an error signal generation module that integrates a variable RF signal source, a low-noise variable gain circuit, a phase-sensitive demodulation circuit, and a low-pass filter into a compact housing. It supports frequency locking using the PDH (Pound-Drever-Hall) method, modulation transfer spectroscopy (MTS), and FM demodulation methods, assisting in the construction of laser frequency stabilization systems. It features an error signal output that can be connected to an external laser servo controller and supports intuitive operation via USB control and a GUI.