Monocrystalline silicon ultra-stable cavity (round cavity)
Monocrystalline silicon ultra-stable cavity (round cavity) is a core optical device developed specifically for ultra-stable laser, quantum technology and other cutting-edge high-precision fields. It is made from high-purity monocrystalline silicon as the base material and processed through precise techniques. It performs exceptionally well in dimensional accuracy, surface shape quality and structural stability, and can fully meet the strict requirements of various high-end scientific research and engineering applications. It provides highly reliable optical support for ultra-stable lasers, gravitational wave detection and other fields.
Core application areas
It is widely applicable to cutting-edge research and technology application scenarios such as ultra-stable lasers, time-frequency transfer, quantum computing, quantum communication, quantum precision measurement, neutral atoms, cold atoms, Rydberg atom research, gravitational wave detection, etc.
Key technical parameters
Indicators | Specific parameters |
External dimensions | Diameter D=10-100mm, length L=5-200 |
Long through hole diameter | From 4 to 12 |
Parallelism of the working surface | 10 or less" |
Work area plane shape | Better than λ/[email protected] |
Work area defects | 40-20 |
Production materials | Monocrystalline silicon |
High-quality monocrystalline silicon substrate:
Unlocking low-noise performance Crafted from high-purity monocrystalline silicon with a uniform crystal structure, our Monocrystalline Silicon Ultra-stable Circular Cavity leverages silicon’s superior properties at cryogenic temperatures—low thermal expansion, high thermal conductivity and stable mechanical structure—for ultra-low noise performance. The monocrystalline silicon cavity body is precision-machined to eliminate grain boundaries and internal defects, minimizing thermal noise and mechanical dissipation. The cavity mirrors feature crystalline semiconductor coatings (e.g., Precise circular structure design: optimizing resonance and compatibility Our Monocrystalline Silicon Ultra-stable Circular Cavity features a precision-engineered circular design (standard diameter 50mm-100mm, length 100mm-200mm), following the proven “workhorse” design for laser stabilization in atomic physics.
The circular structure provides uniform stress distribution and easy integration with cryogenic chambers, The compact design enables fiber coupling for portable applications. An integrated vacuum port allows evacuation to levels better than 10⁻⁶Pa, eliminating air-induced refractive index fluctuations and thermal convection. The cavity incorporates a thermal management system that takes advantage of silicon's high thermal conductivity to maintain a uniform temperature. with a zero-expansion temperature point tunable between 2°C-40°C to minimize cavity length drift.
Core performance advantage:
Adapted to cryogenic precision scenarios Ultraopto’s Monocrystalline Silicon Ultra-stable Circular Cavity boasts exceptional frequency stability with an Allan variance of ~1×10⁻¹⁵, meeting the requirements of atomic clocks and quantum computing. The crystalline mirror coatings suppress birefringent noise through simultaneous probing of both polarization modes, This results in residual noise lower than that of equivalent resonators with dielectric coatings. The cavity demonstrates high finesse (up to 12,000) due to the ultra-high reflectivity of the mirrors. enabling sharp resonance peaks for precise laser locking. Its cryogenic compatibility (operable at liquid helium temperatures) and low acceleration sensitivity (<5×10⁻¹¹/g) make it ideal for low-temperature physics research and space-borne applications. Long-term drift is controlled below 1Hz/day, ensuring reliable performance for extended experiments.
Full-scenario application coverage:
Empowering high-end scientific research and aerospace industries Our Monocrystalline Silicon Ultra-stable Circular Cavity is widely applied in cutting-edge scientific, aerospace and industrial fields. In atomic clocks, it provides the ultra-stable frequency reference required for ultra-precise timekeeping and global navigation systems. For quantum computing, it enables stable operation of quantum bits (qubits) by providing a low-noise optical reference. In cryogenic laser systems, it serves as a frequency reference to lock narrow-linewidth lasers for gravitational wave detection and optical communication. The cavity also finds use in precision spectroscopy, aerospace optical sensors and fundamental physics research, delivering reliable ultra-stable performance in cryogenic and high-precision environments.
Customized services:
Meeting personalized needs As a leading manufacturer of ultra-stable optical cavities, Ultraopto offers fully customized Monocrystalline Silicon Ultra-stable Circular Cavity solutions to meet your unique application requirements. Our professional R&D team can tailor key parameters including cavity dimensions (diameter 50mm-150mm, length 100mm-300mm), mirror coating type (AlGaAs/GaAs, custom crystalline coatings), Operating wavelength (UV to NIR), finesse (5,000 - 12,000), and compatibility with cryogenic temperature ranges. We support custom vacuum flange designs, fiber coupling options, and integrated thermal control systems. All custom cavities undergo multi-stage strict quality inspection, including cavity length measurement and frequency stability testing. coating noise characterization and cryogenic performance verification, with a detailed quality report provided to ensure compliance with your design specifications.
Quality Assurance and Technical Support:
Your Trusted Choice Backed by advanced monocrystalline silicon processing technology and a complete quality control system, Ultraopto ensures stable batch supply and consistent product quality. Our production processes adhere to international precision optical standards, with each cavity subjected to rigorous testing using laser interferometers, frequency stability analyzers and cryogenic environmental chambers. We provide professional technical consultation on cavity selection, cryogenic integration, laser locking implementation and polarization noise cancellation, helping you achieve optimal system performance. Whether you need standard cavities for laboratory research or custom solutions for aerospace applications, Ultraopto’s Monocrystalline Silicon Ultra-stable Circular Cavity delivers exceptional value and reliability.
For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Monocrystalline Silicon Ultra-stable Circular Cavity, please contact our professional sales and technical team through the official website, and we will provide you with efficient, personalized and professional optical solutions.
