894.6nm
894.6nm Single-Mode VCSEL Bare Die for Cs OPM Magnetometer
894.6nm single-mode VCSEL bare die for cesium D1-line OPM magnetometer, Cs vapor-cell magnetic sensing, quantum sensing optical source, TO-46 non-magnetic package and custom beam collimation discussion.
Specifications
- Product Type
- VCSEL Bare Die
- Wavelength
- 894.6 nm typ.
- Optical Output Power
- 1 mW typ.
- Transverse Mode
- Single-mode VCSEL
- Emitter Configuration
- 1 emitter
- Operating Mode
- CW / DC
- Test Condition
- Ta = 60°C, IF = 2mA, DC = 100%
- Forward Voltage
- 2.2 V typ.
- Threshold Current
- 0.3 mA typ.
- Beam Divergence
- 13° typ. at 1/e²
- Die Size
- 200 μm × 240 μm
- Recommended Assembly
- Wire bonding / ceramic submount / custom packaging
Product Overview
1. Standard Bare Die VCSEL for Cs OPM Magnetometer
This 894.6nm single-mode VCSEL bare die is designed for cesium D1-line optical pumping in optically pumped magnetometers, Cs vapor-cell magnetic sensing systems, and compact quantum sensing optical source applications.
The product is supplied as a standard bare die device by default. It is suitable for Cs OPM magnetometer development, cesium vapor-cell sensor modules, laboratory magnetic sensing systems, and compact optical pumping source designs.
With 1.0mW typical optical output power at IF = 2mA, this device provides useful optical power margin for vapor-cell coupling, optical path design, beam shaping, and system-level magnetic-field signal optimization.
2. Key Features
This 894.6nm single-mode VCSEL bare die is supplied as a standard product for cesium D1-line OPM magnetometer and vapor-cell magnetic sensing applications.
Key features include 894.6nm typical wavelength, 1.0mW typical optical output power at IF = 2mA, 30dB minimum SMSR, 20dB minimum PER, 50MHz maximum spectral linewidth, and 13° typical field of view at 1/e².
For Cs OPM magnetometer projects, TO-46 non-magnetic package support can be discussed where low-magnetic material selection and package-level integration are required.
Collimation, beam shaping, divergence control, and customer-specific spot-size requirements can also be reviewed according to the customer's optical layout.
3. Application Development Direction
This device supports cesium-based OPM magnetometer applications, Cs vapor-cell magnetic sensing, cesium D1-line optical pumping, and quantum sensing optical source integration.
In an OPM system, the VCSEL wavelength should be matched to the cesium D-line transition and reviewed together with circular polarization optics, vapor-cell temperature control, magnetic shielding, detector response, low-magnetic package requirements, and final magnetic-field signal behavior.
The 1.0mW typical output power provides optical power margin for optical path design, especially where vapor-cell coupling, collimation, beam shaping, or system-level magnetic-field signal optimization is required.
4. Evaluation Kit and Documentation Support
5-piece evaluation kits can be arranged for selected standard bare die products, subject to product availability and project review.
For OPM magnetometer projects, TO-46 non-magnetic package discussion is available where low-magnetic material selection, package-level integration, beam collimation, or customized optical spot requirements are needed.
Datasheets, bare die sample information, package discussion, TEC / temperature-control review, and project documentation support are available for qualified inquiries.
Please contact us for sample testing, product selection, package discussion, or custom project support.
