Ultra-Stable Sub-Hertz Narrow-Linewidth Clock Laser System for Quantum Technologies

Описание: The CLS Clock Laser System is a high-performance ultra-stable narrow-linewidth laser platform engineered for advanced scientific and quantum technology applications. This laser delivers exceptionally pure spectral output with sub-hertz linewidths and ultra-low phase noise by stabilizing an external cavity diode laser to a high-finesse optical cavity. Such performance enables precise and coherent interaction with narrow atomic and ionic transitions, making the CLS ideal for optical clocks, high-resolution spectroscopy, and quantum computing experiments where spectral coherence and frequency stability are critical.

At the core of the CLS architecture is a meticulously optimized external cavity design combined with state-of-the-art stabilization techniques that suppress intrinsic laser noise to allow linewidths well below 1 Hz. For wavelengths outside the direct diode range, the system uses nonlinear frequency conversion methods such as second-harmonic or fourth-harmonic generation to extend the output across visible and near-infrared bands important for addressing key optical transitions in atoms like strontium, ytterbium, calcium, and barium ions. This flexible wavelength coverage supports a wide range of experimental needs in precision measurement and quantum control.

The system’s thermal and mechanical design emphasizes long-term frequency stability, with active temperature control and vibration-mitigation strategies that minimize environmental perturbations. Passive shielding and advanced isolation ensure that frequency drift over extended periods is exceptionally low, enabling experiments that require continuous operation without frequent re-locks. Control and monitoring are centralized through a robust controller platform featuring a graphical user interface and remote connectivity options, simplifying integration into complex laboratory environments and automated experimental sequences.

One of the defining strengths of the CLS system is its long optical coherence time, which directly benefits applications in quantum information science by enabling high-fidelity interactions with qubits and atomic states. Coherence times extending beyond one second allow researchers to perform highly coherent manipulations and precision measurements. The modular system architecture also accommodates optional enhancements that further tailor performance to specific research challenges.

Optional modules include:

Fiber Noise Cancellation (FNC): Actively reduces phase noise introduced during optical fiber delivery, preserving spectral purity at the point of use.

Frequency Bridge: Allows controlled frequency shifting and linear ramping to track or compensate for cavity drifts and to target specific transition frequencies during experiments.

Seismic+ Package: Provides real-time seismic sensing and isolation to maintain stability in environments subject to low-frequency mechanical disturbances.

IR Cavity Imaging: Offers real-time monitoring of cavity modes for wavelengths above 1000 nm, ensuring optimal locking performance and mode quality.

19-inch Rack Integration: Permits compact, standardized deployment in rack-mounted setups, saving space and simplifying system organization in facilities.

The CLS is designed for demanding use cases where spectral purity, frequency precision, and robust long-term stability are non-negotiable. Its performance makes it suitable for both fundamental physics research and applied metrology, including:

• Optical atomic clocks and frequency standards — Precise frequency references for timekeeping and fundamental tests of physics.
• Quantum physics and quantum computing — Stable lasers for controlling quantum bits and entangling operations.
• High-resolution spectroscopy — Probing ultra-narrow spectral features with minimal uncertainty.
• Laser cooling and trapping — Addressing narrow transitions for efficient cooling and state control.

The CLS Clock Laser System is a cornerstone tool for researchers pushing the limits of precision measurement, quantum technologies, and advanced spectroscopy.

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Del Mar Photonics, Inc. is a leading manufacturer and system integrator of advanced photonics products for scientific and industrial applications. We offer a comprehensive range of lasers, optics, optical crystals, and related instrumentation to support cutting-edge research and development.
We welcome opportunities to collaborate with researchers and instrumentation developers on custom OEM systems tailored to specific application needs.
Contact us [email protected]
http://www.dmphotonics.com