HI-Q® Laser – extremely narrow linewidth lasers with lowest phase noise
The OEwaves HI-Q Laser are highly coherent CW laser sources for applications with the highest requirements for laser linewidth, phase noise, and frequency stability. The systems achieve extremely narrow line widths down to the sub-Hz range and combine these with very low frequency and phase noise.
With available wavelengths from 370 to 4500 nm the HI-Q® platform covers an exceptionally wide spectral range from UV, through the visible spectrum and the near-infrared, all the way to the MIR range. As a result, highly stable laser sources are available for a wide variety of applications in research, quantum technology, sensor technology, and metrology.
Whispering Gallery Mode technology
The exceptional spectral properties of the HI-Q® lasers are based on the developed by OEwaves self-injection locking technology in conjunction with a high-Q Whispering Gallery Mode (WGM) microresonator.
The light from a semiconductor laser source is coupled into an extremely high-Q WGM resonator. Through optical feedback, the laser emission is stabilized to a resonance of the microresonator. OEwaves achieves resonator Q-factors of this technology of more than one billion, which can drastically reduce the frequency and phase noise of the laser.
The result is a compact laser source with a spectral purity that would otherwise require considerably more complex stabilization schemes.
Broad spectrum of wavelengths
The HI-Q® laser platform is available for numerous wavelengths from UV at 370 nm up to the mid-infrared range at 4500 nm available. OEwaves offers both standardized wavelengths and customized solutions for special requirements.
Depending on the wavelength and configuration, different output powers and optical interfaces are available. The systems can, for example, be equipped with polarization-maintaining fiber output or as a free-space version be executed.
This allows HI-Q® lasers to be precisely adapted to the respective experimental setup or optical system.
High stability with a compact design
In addition to its narrow linewidth, HI-Q® technology is characterized by its compact and robust architecture. Stabilization is achieved directly via the optical microresonator, enabling high spectral stability with low technical complexity.
This makes the lasers suitable both for demanding laboratory applications and for integration into more complex optical measurement and sensor systems.
Typical applications
The combination of high coherence, narrow linewidth, and low phase noise makes the HI-Q® laser particularly interesting for applications where the smallest frequency changes or phase shifts must be measured:
- Quantum optics and quantum technology
- Atomic physics and atom interferometry
- High-resolution spectroscopy
- Optical frequency metrology
- Interferometric sensing
- LiDAR and coherent ranging
- Microwave photonics
- Optical communication
- Precision measurements and scientific research
Advantages of the HI-Q® Lasers
- Laser line widths down to the sub-Hz range
- Extremely low phase and frequency noise
- Wavelengths from 370 to 4500 nm
- High coherence and frequency stability
- High-Q Whispering-Gallery-Mode-Resonators
- self-injection locking technology
- Compact and robust system architecture
- PM fiber output or free space available
- Standard and custom wavelengths
OEwaves HI-Q Laser
The OEwaves HI-Q Laser Platform offers an exceptional combination of extremely narrow linewidth, low phase noise, and high wavelength flexibility. This makes it particularly suitable for applications where conventional laser sources reach their limits in terms of spectral purity and frequency stability.
In combination with the OE4000 Laser Linewidth and Phase Noise Analyzer and the OE4001 Laser RIN Analyzer OEwaves also offers matching measurement technology for the comprehensive characterization of highly stable laser sources.
Soliton helps you choose the appropriate HI-Q® laser configuration regarding wavelength, output power, line width, and optical interface.
