Shi Yingchao's stable cavity (round cavity)
Our Stone Premier Stable cavity (round cavity) is a high-end core component developed for the frontier precision optics field. It is made of selected fused quartz as the base material and has the core characteristics of low expansion and high optical stability. It has a wide range of size specifications, strict control of shape and position and optical accuracy, and perfectly meets the extreme application requirements of high-end scenarios such as ultra-stable lasers, quantum technology, gravitational wave detection, etc. We provide high-precision and highly reliable core support for all kinds of cutting-edge optical systems.
Core Product Parameters
Screening metrics | Specific parameters |
External dimensions | D=φ10-100mm, L=5-200mm |
Long through hole diameter | D = from 4 to 12 mm |
Parallelism of the working surface | 10 or less" |
Work area plane shape | Better than λ/[email protected] |
Work area defects | 40-20 |
Base material | Fused quartz |
Core advantages of the product
Superior substrate characteristics:
Made of fused quartz, it has an extremely low coefficient of thermal expansion, excellent optical transmittance and laser damage resistance, and maintains structural and optical performance stability even under extreme conditions.
Precise size control:
Long through-hole specifications ranging from φ4 to φ12mm, wide form size compatibility, can be directly integrated and assembled, improving the efficiency and compatibility of optical system construction.
Ultimate optical accuracy:
Working surface parallelism ≤10 ", working area surface shape better than λ/[email protected], defect up to 40-20 standard, excellent optical surface quality, significantly reduced light transmission loss.
Wide specification coverage:
Shape diameter φ10-100mm, length 5-200mm, covering the assembly requirements of various types of advanced optical systems, supporting customized adaptation to different application scenarios.
Developed and designed for ultra-stable lasers, quantum computing, gravitational wave detection and other fields, performance indicators meet industry high-end standards and can be quickly integrated without secondary debugging.
Core application areas
The core is applied in cutting-edge precision optics and quantum technology fields such as ultra-stable lasers, time-frequency transfer, quantum computing, quantum communication, quantum precision measurement, neutral/cold/Rydberg atom research, gravitational wave detection, etc. It is a key core component of all kinds of high-end optical systems.
High-quality stone base material:
Laying the foundation for high rigidity Crafted from high-density natural stone materials including precision-ground granite and marble, Our Ultra-stable Stone Circular Cavity offers superior mechanical rigidity and vibration damping compared to traditional glass or metal cavities. The high density (2.6-2.8g/cm³) and low thermal expansion coefficient of natural stone ensure minimal cavity length drift under temperature fluctuations and vibration, while its inherent damping properties suppress resonance-induced noise. The circular cavity body is precision-machined and polished to achieve flat end faces (flatness λ/10 @632.8nm) for optical contact bonding with fused silica mirrors. The mirrors feature super-smooth surfaces (<0.1nm RMS roughness) and high-reflection (HR) coatings optimized for key wavelengths, delivering >99.9% reflectivity and enhancing cavity performance.
Optimized Circular Structure Design:
Enhancing Resonance and Stability Our Ultra-stable Stone Circular Cavity features a precision-engineered circular design with standard dimensions (diameter 50mm-100mm, length 100mm-300mm), following the proven performance of cylindrical cavities in laser stabilization. The circular structure provides uniform stress distribution, Minimizing deformation under mounting pressure and environmental loads. An integrated vacuum port enables evacuation to levels better than 10⁻⁶Pa, eliminating air-induced refractive index fluctuations and improving resonance stability. The cavity incorporates a thick-walled stone design to enhance thermal inertia. reducing the impact of rapid temperature changes on cavity length. The circular shape also facilitates easy integration with standard optical mounts and vibration isolation platforms, simplifying system assembly.
Core performance advantages:
Adapted to demanding industrial scenarios
Ultraopto's Ultra-stable Stone Circular Cavity features outstanding mechanical rigidity, with vibration sensitivity less than 5×10⁻¹¹/g, making it highly suitable for industrial environments with moderate vibration. The cavity demonstrates stable resonance performance with a finesse of up to 8,000. enabling precise laser locking for industrial laser systems. Its natural stone construction offers excellent resistance to environmental pollutants and mechanical wear, ensuring long-term reliability in harsh working conditions. The cavity supports locked linewidths >50Hz, meeting the requirements of most industrial precision spectroscopy and laser stabilization applications. Strict dimensional tolerance control ensures consistent cavity length and resonance frequency, with long-term drift controlled below 5Hz/day.
Full-scenario application coverage:
Empowering industry and scientific research Our Ultra-stable Stone Circular Cavity is widely applied in industrial, scientific and environmental fields. In industrial laser systems, it serves as a frequency reference to stabilize laser output for material processing and precision cutting. For industrial spectroscopy, it provides stable resonance for high-resolution analysis of chemical compositions and material properties. In optical metrology instruments, it enables precise measurement of optical frequencies and wavelength standards. The cavity also finds use in harsh-environment optical systems, such as outdoor laser rangefinders and industrial process monitoring equipment, delivering reliable performance in the presence of vibration and temperature fluctuations.
Customized services:
Meeting personalized needs As a professional manufacturer of ultra-stable optical cavities, Ultraopto offers fully customized Ultra-stable Stone Circular Cavity solutions to meet your unique application requirements. Our experienced R&D team can tailor key parameters including cavity dimensions (diameter 50mm-200mm, length 100mm-500mm), stone material selection (granite, marble, custom), Operating wavelength (visible to NIR), finesse (1,000 - 8,000) and vacuum flange design. We support custom mirror coatings and integration with vibration isolation systems for high-precision applications. All custom cavities undergo multi-stage strict quality inspection, including cavity length measurement, resonance stability testing, reflectivity verification and mechanical rigidity assessment. with a detailed quality report provided to ensure compliance with your design specifications.
Quality Assurance and Technical Support:
Your Trusted Choice Backed by advanced stone 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 vibration testing equipment. We provide professional technical consultation on cavity selection, industrial integration, vibration damping and laser locking implementation, helping you achieve optimal system performance. Whether you need standard cavities for industrial production or custom solutions for harsh-environment applications, Ultraopto’s Ultra-stable Stone Circular Cavity delivers exceptional value and reliability.
For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Ultra-stable Stone 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.
