Fiber lasers operate in the near-infrared. Wavelength conversion extends that performance into the visible and UV without giving up the spectral purity that makes fiber laser technology worth using.
Seed Laser Pro’s wavelength converted fiber laser range produces single frequency output at 193 nm, 266 nm, 509 nm, 532 nm, 780 nm, and 795 nm. Each output wavelength inherits the narrow linewidth, low phase noise, and single longitudinal mode character of the fiber seed directly. The result is an industrial-grade single frequency laser at wavelengths that matter for quantum sensing, magnetometer laser source applications, laser spectroscopy, and cold atom physics. No dye laser maintenance. No premium platform pricing.
QUICK SPECIFICATION SUMMARY
| Parameter | Range / Options |
|---|
| Output Wavelengths | 193 nm · 266 nm · 509 nm · 532 nm · 780 nm · 795 nm |
| Operation Mode | Single frequency, single longitudinal mode |
| Linewidth | Sub-kHz to sub-80 kHz depending on wavelength |
| Polarization | PM fiber construction, specified PER |
| Output Type | Free-space and fiber coupled |
| Applications | Quantum sensing · Spectroscopy · Magnetometry · Atomic physics · Laser cooling |
| Form Factor | Industrial-grade module, OEM-compatible |
How Wavelength Conversion Works
A wavelength converted fiber laser starts with a single frequency fiber seed in the near-infrared, typically at 1064 nm, 1550 nm, or 1560 nm. The seed output passes through a nonlinear crystal configured for second harmonic generation (SHG), sum-frequency generation (SFG), or higher-order harmonic conversion. The crystal shifts the wavelength while preserving the coherence of the seed.
This coherence inheritance is what makes the fiber-based approach valuable. Narrow linewidth at the seed becomes narrow linewidth at the visible or UV output. Low phase noise at the seed becomes low phase noise at the converted wavelength. The fiber source handles all gain, stability, and reliability engineering. The conversion stage adds only the wavelength shift.
This is why wavelength converted fiber lasers have largely replaced dye lasers and many solid-state platforms in quantum physics and spectroscopy research. They offer better long-term stability, a smaller footprint, and a maintenance burden that is compatible with field-deployed and production-integrated applications.
Available Wavelengths and Applications
| Output Wavelength | Key Applications |
|---|
| 193 nm | Deep UV spectroscopy, photochemistry, semiconductor inspection |
| 266 nm | Fluorescence excitation spectroscopy, UV laser ablation, material analysis |
| 509 nm | Cesium Rydberg atom physics, visible spectroscopy, atomic research |
| 532 nm | Quantum optics, holography, precision interferometry |
| 780 nm | Rubidium D2 laser cooling, atom interferometry, quantum sensing |
| 795 nm | Rubidium D1 magnetometry, quantum storage |
Laser for Quantum Sensing
Quantum sensing platforms measure physical quantities including magnetic fields, acceleration, rotation, and time with precision that classical sensors cannot reach. Rubidium-based sensors operate at the 780 nm D2 and 795 nm D1 atomic transition lines. The laser source must maintain frequency stability and resonance with the target transition throughout the full measurement window.
Seed Laser Pro’s 780 nm and 795 nm outputs derive from single frequency fiber seeds and carry the coherence and stability that quantum sensing platforms require. The compact module form factor supports field deployment and OEM integration outside laboratory environments.
Magnetometer Laser Source at 795 nm
Optically pumped magnetometers use resonant laser-atom interaction in rubidium vapor to measure magnetic field strength with sub-femtotesla sensitivity. The 795 nm Rubidium D1 line is the standard choice for vapor cell magnetometers used in geophysical survey, medical magnetocardiography, and navigation instruments.
The magnetometer laser source must maintain precise frequency alignment with the D1 transition across varying temperature and environmental conditions. Linewidth, frequency stability, and output power consistency are all specification requirements, not preferences. Seed Laser Pro’s 795 nm single frequency converted laser meets these requirements in a robust module form factor qualified for field-deployed and OEM magnetometer instruments.
A 780 nm laser for quantum sensing at the D2 line and a 795 nm magnetometer laser source for D1 magnetometry are both available as standard catalog products.
Laser for Spectroscopy Across UV to Visible
High-resolution spectroscopy demands narrow linewidth, stable center frequency, and clean single-mode output at the target wavelength. Seed Laser Pro’s converted laser range covers multiple spectroscopic windows.
Deep UV at 193 nm and 266 nm. Photochemistry, semiconductor inspection, fluorescence excitation spectroscopy, and UV laser ablation for material analysis. Single frequency CW output at these wavelengths from a solid-state architecture, without the gas handling and maintenance demands of excimer sources.
Visible at 509 nm and 532 nm. Cesium Rydberg atom spectroscopy, quantum optics pump sources, holography, and precision interferometry. The 509 nm output specifically targets the cesium 6P Rydberg transition for quantum sensing and atomic radar research. The 532 nm output covers atomic and molecular absorption features used in environmental monitoring and chemical analysis.
Near-infrared converted at 780 nm and 795 nm. High-resolution rubidium spectroscopy, laser cooling, and magnetometry. All outputs maintain narrow linewidth and single frequency performance to resolve fine spectral features that multimode or broadband sources cannot distinguish.
Koheras Equivalent Fiber Laser: Industrial-Grade Alternative
The performance benchmark in single frequency fiber lasers for scientific and industrial applications has historically been set by premium platforms. The barrier to procurement is often pricing, lead time, or minimum order volumes that make those platforms impractical for smaller programs, prototype builds, or cost-sensitive instrument designs.
Seed Laser Pro’s wavelength converted fiber lasers are built on DFB fiber seed architecture with PM fiber construction and specified linewidth, phase noise, and polarization extinction ratio. Every unit is tested before shipment against these specifications. Not sampled. Every unit.
For programs that need a Koheras equivalent fiber laser at more accessible pricing and lead times, Seed Laser Pro’s engineering team can review your specification and confirm fit. Custom configurations are available for wavelengths and output parameters outside the standard range.
Industrial-Grade Single Frequency Laser Construction
Research-grade laser sources are designed for optical benches in temperature-controlled laboratory environments. Industrial-grade single frequency lasers are designed to operate reliably outside those conditions, including in field-deployed sensors, OEM instruments, and systems running continuously without regular maintenance or realignment.
Seed Laser Pro’s wavelength converted modules use all-fiber construction where possible. This eliminates free-space optical elements that are sensitive to vibration, temperature cycling, and mechanical shock. Output power, spectral characteristics, and polarization state remain stable across the operating temperature range.
A laser that performs in the laboratory but drifts during deployment is not a usable component. Seed Laser Pro’s modules are specified and tested for both environments.
Wavelength Selection Guide
| I need a laser for | Choose this wavelength |
|---|
| Rubidium D2 laser cooling or quantum sensing | 780 nm |
| Rubidium D1 magnetometry or quantum storage | 795 nm |
| Quantum optics, holography, or interferometry | 532 nm |
| Cesium Rydberg atom physics | 509 nm |
| UV fluorescence spectroscopy or laser ablation | 266 nm |
| Deep UV photochemistry or semiconductor inspection | 193 nm |
For wavelengths outside the standard range, contact Seed Laser Pro. Frequency converted outputs at other visible and near-UV wavelengths are available on a custom basis.
