795nm

795nm Single-mode VCSEL Bare Die for Rb OPM Magnetometer

795nm single-mode VCSEL bare die for Rb OPM magnetometer and rubidium vapor-cell magnetic sensing, with 0.7mW output and ≤30MHz linewidth.

Specifications

Product Type: Single-mode VCSEL Bare Die
Wavelength: 795nm typ. / 794.5–795.5nm
Optical Output Power: 0.7mW typ. @ Ta=70°C, IF=2mA, DC=100%
Operating Mode: CW / DC=100%
SMSR / PER: ≥35dB / ≥20dB
Spectral Linewidth: ≤30MHz
Field of View: D86 16° typ.

1. 795nm Single-mode VCSEL Bare Die for Rb OPM Magnetometer

The 795nm Single-mode VCSEL Bare Die is designed for rubidium D1-line optical pumping in Rb optically pumped magnetometer and vapor-cell magnetic sensing systems.

This product is supplied as a bare die for compact vapor-cell magnetometer integration, quantum sensing optical-source evaluation and laboratory optical-source testing for OPM systems. It is intended for engineering teams that require a low-current, single-mode 795nm VCSEL source for rubidium-based magnetic sensing development.

The device provides a typical 795nm peak wavelength, 0.7mW typical optical output power, narrow spectral linewidth, high single-mode suppression ratio and defined polarization performance for Rb OPM magnetometer applications.

For the broader application structure, review the Atomic Clock & OPM Magnetometer Solution.

2. Single-mode Optical Characteristics for Rubidium OPM Systems

The 795nm wavelength corresponds to rubidium D1-line optical pumping and can be used as an optical source for Rb vapor-cell magnetic sensing and optically pumped magnetometer development.

In an Rb OPM system, the VCSEL wavelength, linewidth, polarization state, optical output power, vapor-cell temperature, circular polarization optics, magnetic shielding, detector response and final magnetic-field signal behavior should be validated together at the system level.

Parameter	Value	Condition
Peak Wavelength	795nm typ. / 794.5–795.5nm	Ta=70°C, IF=2mA, DC=100%
Optical Output Power	0.7mW typ.	Ta=70°C, IF=2mA, DC=100%
Threshold Current	0.4mA typ.	According to datasheet condition
Forward Voltage	1.9V typ.	According to datasheet condition
SMSR	≥35dB	Single-mode operation
PER	≥20dB	Defined polarization output
Spectral Linewidth	≤30MHz	Standard specification
Field of View	D86 16° typ.	According to datasheet condition
Wavelength Shift vs. Temperature	0.06nm/K typ.	According to datasheet condition
Wavelength Shift vs. Current	0.38nm/mA typ.	According to datasheet condition
Die Thickness	150µm	Bare die format

This product is suitable for:

Rubidium-based optically pumped magnetometers

Rb vapor-cell magnetic sensing evaluation

Rubidium D1-line optical pumping

Compact vapor-cell magnetometer module development

Quantum sensing optical-source evaluation

Laboratory optical-source testing for OPM systems

Final suitability should be verified according to optical power, wavelength matching, linewidth, polarization optics, vapor-cell condition, magnetic shielding, detector response, thermal design and the complete customer system.

3. OPM Integration and Magnetic-Environment Considerations

Bare Die Supply for Vapor-Cell Magnetometer Integration

The standard supply form for this product page is bare die. Bare die supply is suitable for customers who need compact magnetometer module integration, direct optical alignment, chip-level thermal design or custom packaging for vapor-cell magnetic sensing systems.

Bare die integration should be handled in an ESD-controlled process. Customers should verify die bonding, wire bonding, current control, thermal path, optical alignment and magnetic-environment compatibility in the final OPM system.

Optional Non-Magnetic Packaged Evaluation Configuration

For OPM projects that require a packaged optical source, optional non-magnetic packaged evaluation configurations may be discussed upon request.

These configurations are project-specific and should not be treated as the standard supply form of this page. Package structure, material selection, pin definition, optical geometry, temperature sensor, sealing method and preparation time should be confirmed separately according to the customer’s OPM system requirement.

This page does not define a standard residual-magnetism specification or a guaranteed magnetic-field compatibility level. For high-sensitivity OPM systems, package suitability should be reviewed together with the customer’s magnetic shielding, laser-source location, optical coupling path and system-level magnetic-noise requirements.

TEC, Temperature Sensor and Sealing Options

Temperature control is important for rubidium D1-line wavelength matching. For packaged project configurations, TEC / Peltier control and temperature-sensor selection may be reviewed according to the required wavelength setpoint, optical layout and module structure.

NTC and PT1000 temperature-sensing options, vacuum-sealed packages and dry-nitrogen-filled packages may be discussed for project-specific integration. Final configuration should be confirmed before production.

4. Paid Evaluation Samples and Project Support

Paid evaluation samples are available for early-stage wavelength, linewidth, optical-power, polarization and vapor-cell magnetic sensing validation. The standard evaluation quantity is 5 pcs per set.

Evaluation support can help customers verify:

795nm wavelength matching

Rubidium D1-line optical-source behavior

Optical output power

Linewidth and single-mode performance

Polarization performance

Temperature-control requirements

Bare die integration or package-configuration direction

Vapor-cell magnetic sensing system compatibility

Request Paid OPM VCSEL Evaluation Samples

For project-specific wavelength binning, package configuration, non-magnetic evaluation packaging, TEC integration, temperature sensing or vapor-cell magnetometer module adaptation, submit the application information and target operating conditions for engineering review.

Submit Custom Development & ODM

For rubidium atomic clock and CPT atomic clock projects, review the related page:

795nm Single-mode VCSEL Bare Die for Rb Atomic Clock.

5. Frequently Asked Questions

FAQ 1. Is this 795nm VCSEL designed for Rb OPM magnetometer applications?

Yes. This 795nm Single-mode VCSEL Bare Die is designed for rubidium D1-line optical pumping in Rb optically pumped magnetometer and vapor-cell magnetic sensing systems.

The device should be validated together with the customer’s vapor cell, polarization optics, temperature-control design, magnetic shielding, detector response and final magnetic-field signal behavior.

FAQ 2. Is this product supplied as bare die or packaged VCSEL?

This product page refers to bare die supply as the standard form.

Optional non-magnetic packaged evaluation configurations, TO-can packaging, TEC / Peltier integration, NTC or PT1000 temperature sensing, vacuum sealing, dry-nitrogen filling, ceramic submounts and collimating lenses may be discussed as project-specific configurations. These package options are not treated as the default configuration of this page.

FAQ 3. Does this page define a standard non-magnetic OPM package?

No. This page does not define a standard non-magnetic OPM package, residual-magnetism specification or guaranteed magnetic-field compatibility level.

For OPM systems, package suitability should be reviewed according to the customer’s magnetic shielding, optical coupling method, laser-source position, package material requirement and magnetic-noise budget.