01 / Rb Atomic Clock1
795nm VCSEL for rubidium CPT atomic clocks
795nm single-mode VCSEL bare die supports rubidium D1-line optical pumping for CPT atomic clock evaluation and compact vapor-cell timing module development.
RB D1 / CPT CLOCK / TIMING
Single-mode VCSEL sources for atomic clocks and OPM magnetometers.
Single-mode VCSEL sources for atomic clocks and OPM quantum sensing.
1ONELASER provides 795nm and 894.6nm single-mode VCSEL bare die products for rubidium and cesium vapor-cell systems, including atomic clock optical source evaluation and optically pumped magnetometer applications.
Standard products are supplied as bare die by default. For selected atomic clock projects, TO-46 packaged VCSELs are supported. For OPM magnetometer projects, TO-46 non-magnetic package support can be discussed according to the system requirements.
APPLICATION OVERVIEW
VCSEL wavelength matching for rubidium and cesium vapor-cell systems.
Atomic clock and quantum sensing systems require optical sources matched to alkali-metal transition lines. 795nm VCSELs support rubidium D1-line systems, while 894.6nm VCSELs support cesium D1-line systems.
For atomic clocks, 795nm VCSELs support Rb CPT clock evaluation, while 894.6nm VCSELs support Cs atomic clock optical source evaluation. For OPM magnetometers, 795nm and 894.6nm VCSELs can be evaluated as pump laser sources for Rb- and Cs-based vapor-cell systems.
APPLICATION DIRECTIONS
VCSEL optical sources for precision timing and magnetic-field sensing.
Single-mode VCSELs support compact vapor-cell systems where wavelength matching, low-current operation, polarization behavior, thermal stability and package integration are important.
View 795nm Rb Clock VCSEL
02 / Cs Atomic Clock2
894.6nm VCSEL for cesium atomic clocks
894.6nm single-mode VCSEL bare die supports cesium D1-line optical source evaluation for Cs vapor-cell atomic clocks and precision timing applications.
CS D1 / ATOMIC CLOCK / PRECISION TIMING
03 / Rb OPM3
795nm VCSEL for rubidium OPM magnetometers
795nm single-mode VCSELs can be evaluated as compact pump-laser sources for rubidium-based optically pumped magnetometers and vapor-cell magnetic sensing modules.
RB OPM / MAGNETOMETER / VAPOR CELL
04 / Cs OPM4
894.6nm VCSEL for cesium OPM magnetometers
894.6nm single-mode VCSELs can be evaluated as pump-laser sources for cesium-based OPM magnetometers, supporting Cs D1-line optical pumping and magnetic-field sensing.
CS OPM / OPTICAL PUMPING / MAGNETIC SENSING
05 / Quantum Sensing5
VCSEL sources for vapor-cell quantum sensing
VCSEL optical sources can be reviewed with vapor cells, polarization optics, thermal control, magnetic shielding and photodetector circuits for compact quantum sensing modules.
QUANTUM SENSING / VAPOR CELL / OPTICAL SOURCE
06 / Custom Package6
Custom VCSEL Packaging & Integration
For projects beyond bare-die supply, we offer TO-46 and non-magnetic packaging, ceramic submounts, thermal-path design, integrated TEC, NTC or PT1000 sensing, vacuum or dry-nitrogen sealing, beam collimation, and custom assembly.
CUSTOM PACKAGE / TO-46 / NON-MAGNETIC / TEC / VACUUM / N₂
ENGINEERING REVIEW
Key VCSEL selection points for vapor-cell atomic clock and OPM systems.
Atomic clock and OPM magnetometer systems require more than a nominal wavelength match. The VCSEL should be reviewed together with the vapor cell, temperature condition, optical path, polarization control, package form and final signal response.
01
D-Line Wavelength Matching
Review the VCSEL wavelength against the target alkali-metal D-line transition, including 795nm for Rb D1 and 894.6nm for Cs D1 systems.
02
Linewidth, SMSR and PER
Spectral linewidth, single-mode suppression ratio and polarization extinction ratio are important for stable optical pumping and repeatable vapor-cell response.
03
Operating Temperature
Operating temperature, wavelength shift versus temperature and TEC-related control should be reviewed to maintain wavelength alignment under actual working conditions.
04
Optical Pumping Path
Collimation, circular polarization optics, beam alignment and vapor-cell geometry affect optical pumping efficiency, CPT signal quality and OPM magnetic-field response.
05
Packaging & Integration
Bare die is the default standard product form. TO-46 packaging is supported for atomic clocks, while TO-46 non-magnetic packaging, ceramic submounts, thermal-path design, integrated TEC, NTC or PT1000 sensing, vacuum or dry-nitrogen sealing, beam collimation, and custom assembly.
06
System-Level Validation
Final suitability should be validated under the customer’s actual optical, thermal, electrical, vapor-cell and magnetic-field sensing conditions.
EVALUATION SUPPORT
Datasheets, Evaluation Kits and Package Configuration
We support early-stage evaluation for atomic clock, OPM magnetometer and vapor-cell quantum sensing projects with product datasheets, 5-piece evaluation kits, bare die samples and application-specific packaging options.
Standard products are supplied as bare die by default. When requesting samples, please specify the required delivery form, such as bare die, standard TO packaging, non-magnetic packaging, integrated TEC, NTC or PT1000 temperature sensing, vacuum sealing or dry-nitrogen filling.
NEXT STEP
Advance your atomic clock, OPM or vapor-cell project with 795nm or 894.6nm single-mode VCSELs, evaluation kits, or custom packaging.
Share your target wavelength, optical power, linewidth, operating temperature, magnetic and temperature-control requirements. Our team will recommend the suitable device and package configuration.
795nm Rb D1-line · 894.6nm Cs D1-line · Bare die and custom package options
Single-Mode VCSELs for Atomic Clocks & OPM