{"id":6232,"date":"2023-08-02T20:34:10","date_gmt":"2023-08-02T18:34:10","guid":{"rendered":"https:\/\/soliton-gmbh.de\/?post_type=product&p=6232"},"modified":"2026-09-09T16:58:02","modified_gmt":"2026-09-09T14:58:02","slug":"extremely-narrowband-laser","status":"publish","type":"product","link":"https:\/\/soliton-gmbh.de\/en\/produkt\/extrem-schmalbandige-laser\/","title":{"rendered":"HI-Q\u00ae extremely narrow linewidth lasers"},"content":{"rendered":"

HI-Q\u00ae Laser \u2013 extremely narrow linewidth lasers with lowest phase noise<\/h2>\n

The OEwaves HI-Q Laser<\/strong> are highly coherent CW laser sources for applications with the highest requirements for laser linewidth, phase noise, and frequency stability<\/strong>. The systems achieve extremely narrow line widths down to the sub-Hz range<\/strong> and combine these with very low frequency and phase noise.<\/p>\n

With available wavelengths from 370 to 4500 nm<\/strong> the HI-Q\u00ae 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.<\/p>\n

Whispering Gallery Mode technology<\/h2>\n

The exceptional spectral properties of the HI-Q\u00ae lasers are based on the developed by OEwaves self-injection locking technology<\/strong> in conjunction with a high-Q Whispering Gallery Mode (WGM) microresonator<\/strong>.<\/p>\n

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<\/strong>, which can drastically reduce the frequency and phase noise of the laser.<\/p>\n

The result is a compact laser source with a spectral purity that would otherwise require considerably more complex stabilization schemes.<\/p>\n

Broad spectrum of wavelengths<\/h2>\n

The HI-Q\u00ae laser platform is available for numerous wavelengths from UV at 370 nm up to the mid-infrared range at 4500 nm<\/strong> available. OEwaves offers both standardized wavelengths and customized solutions for special requirements.<\/p>\n

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<\/strong> be executed.<\/p>\n

This allows HI-Q\u00ae lasers to be precisely adapted to the respective experimental setup or optical system.<\/p>\n

High stability with a compact design<\/h2>\n

In addition to its narrow linewidth, HI-Q\u00ae 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.<\/p>\n

This makes the lasers suitable both for demanding laboratory applications and for integration into more complex optical measurement and sensor systems.<\/p>\n

Typical applications<\/h2>\n

The combination of high coherence, narrow linewidth, and low phase noise makes the HI-Q\u00ae laser particularly interesting for applications where the smallest frequency changes or phase shifts must be measured:<\/p>\n