894.6nm
894.6nm Single-Mode VCSEL Bare Die for Atomic Clock
894.6nm single-mode VCSEL bare die for cesium D1-line optical pumping, Cs vapor-cell atomic clock evaluation, CPT atomic clock development, precision timing systems, and OEM atomic clock module integration.
Specifications
- Product Type
- VCSEL Bare Die
- Wavelength
- 894.6 nm typ.
- Optical Output Power
- 0.3 mW typ.
- Transverse Mode
- Single-mode VCSEL
- Emitter Configuration
- 1 emitter
- Operating Mode
- CW
- Test Condition
- Ta = 80°C, IF = 1.4 mA, DC = 100%
- Forward Voltage
- 1.8 V typ.
- Threshold Current
- 0.6 mA typ.
- Beam Divergence
- 20° typ. at 1/e²
- Die Size
- 200 μm × 240 μm
- Recommended Assembly
- Wire bonding / ceramic submount / custom packaging
Product Overview
1. Single-Mode VCSEL Bare Die for Cesium Atomic Clock Optical Pumping
This 894.6 nm single-mode GaAs VCSEL bare die is designed for cesium D1-line optical pumping in Cs vapor-cell and CPT atomic clock systems. It supports low-current CW operation and provides a compact bare die format for engineering evaluation, vapor-cell atomic clock module development, and laboratory optical source testing.
Under the specified test conditions of Ta = 80°C, IF = 1.4 mA, and DC = 100%, the device provides a typical peak wavelength of 894.6 nm, typical optical output power of 0.3 mW, typical threshold current of 0.6 mA, typical forward voltage of 1.8 V, and typical slope efficiency of 0.37 W/A.
Additional reference parameters include a minimum single-mode suppression ratio of 20 dB, minimum polarization extinction ratio of 15 dB, maximum spectral linewidth of 100 MHz, typical wavelength shift versus temperature of 0.06 nm/K, and typical wavelength shift versus current of 0.3 nm/mA. The die size is 200 μm × 240 μm with a thickness of 150 μm, supporting compact integration into cesium atomic clock modules.
2. Application Development Direction
This product is suitable for cesium vapor-cell optical pumping, Cs D1-line atomic clock evaluation, CPT cesium atomic clock development, precision timing and frequency-reference systems, laboratory optical source testing, and integration into compact vapor-cell atomic clock modules.
Final wavelength matching, tuning range, spectral linewidth, polarization, output power, beam profile, modulation characteristics, bonding process, and package-level optical performance should be validated according to the customer’s actual vapor-cell, optical-path, temperature-control, and electronic-drive conditions.
Optional package configurations may include standard TO-can packaging, integrated TEC temperature control, NTC thermistor or PT1000 temperature sensing, vacuum-sealed packaging, and dry-nitrogen-filled packaging. Custom operating-temperature wavelength binning, output-power direction, die configuration, package structure, and temperature-control architecture may also be discussed according to specific project requirements.
3. Evaluation Sample and Documentation Support
Evaluation sample availability and quantity may vary depending on wavelength binning, product configuration, packaging requirements, project requirements, and inventory status. Please contact us to confirm sample availability, sample quantity, pricing, package configuration, delivery time, and international express shipping costs for this 894.6 nm single-mode VCSEL.
Available technical documentation may include the product datasheet, die dimensional drawing, electrical and optical test information, and material compliance documentation, including RoHS, REACH, and halogen-free documentation, upon request.
System-level CE, EMC, EN 60825 laser safety, LVD, and other regulatory compliance requirements should be evaluated according to the customer’s final product design and intended application.
Please contact us for sample testing, engineering evaluation, temperature-controlled packaging, or customized cesium atomic clock optical source support.
