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 Evaluation
This 894.6nm single-mode VCSEL bare die is designed for cesium D1-line related optical pumping in Cs vapor-cell atomic clock systems, especially for engineering teams working on CPT atomic clock development, precision timing modules, and compact frequency-reference systems.
The product is supplied in bare die format for compact atomic clock module integration. It supports low-current CW operation at Ta = 80°C and IF = 1.4 mA, with 0.3 mW typical optical output power, 0.6 mA typical threshold current, and 1.8 V typical forward voltage.
For system-level evaluation, reference parameters include SMSR ≥20 dB, PER ≥15 dB, spectral linewidth ≤100 MHz, 0.37 W/A typical slope efficiency, 0.06 nm/K typical wavelength shift versus temperature, and 0.3 nm/mA typical wavelength shift versus current. The die thickness is 150 μm, supporting compact bare-die integration for cesium atomic clock module development.
2. Application Development Direction
With a 894.6nm peak wavelength matched to cesium D1-line related applications, this VCSEL bare die is suitable for cesium vapor-cell optical pumping, Cs D1-line atomic clock evaluation, CPT atomic clock development, precision timing and frequency-reference systems, laboratory optical source evaluation, and OEM integration for vapor-cell atomic clock modules.
For engineering teams previously evaluating 894.6nm / 895nm single-mode VCSEL bare die options such as OSRAM BIDOS® CORE OLI0608V.A1-895-A, this product can be reviewed as an alternative source candidate for cesium atomic clock projects. Final wavelength matching, tuning range, linewidth, polarization, modulation behavior, bonding process, and system-level optical performance should be validated in the target atomic clock system.
If the standard configuration does not fully match the project requirement, custom wavelength binning, output power direction, operating-temperature condition, die configuration, and package-level solutions can also be discussed based on the specific application.
3. Evaluation Sample and Documentation Support
Evaluation sample availability and pricing may vary based on wavelength binning, die configuration, operating condition, and project requirements. Please contact us to confirm sample availability, sample quantity, and international express shipping cost for this 894.6nm single-mode VCSEL bare die.
CE-related documentation is available for project evaluation, including EMC documentation and EN 60825 laser safety / LVD test documentation. Material compliance documentation, including RoHS, REACH, and HF documentation, can also be provided upon request.
Please contact us for sample testing, engineering evaluation, or custom project support.
