https://cdn.gophotonics.com/news/0d1ece56037b618f8c7cff56f6f24b63_2_1_639166742309260223.webp712370
Sevensix, a Japanese photonics company specializing in fiber-optic, laser, and RF technologies, offers its iQoM series of ultrashort pulse fiber lasers for OEM integration, scientific research, and advanced laser system development. Designed as an all-fiber-based ultrashort pulse laser module, iQoM combines compact size, long-term reliability, and cost-effective operation while delivering picosecond pulse generation in the 1 µm wavelength range.
The iQoM generates ultrashort optical pulses at 1040 nm or 1064 nm using a 976 nm continuous-wave laser input. Unlike many conventional mode-locked fiber lasers that rely on semiconductor saturable absorber mirrors (SESAMs), iQoM employs an artificial saturable absorber architecture. By eliminating SESAMs, the system avoids issues related to component degradation, manufacturing variability, and long-term reliability concerns that can affect conventional ultrafast laser designs.
A distinguishing feature of the platform is Sevensix's proprietary pulse-generation technology, which incorporates dual-color bandpass filtering to improve the reliability and reproducibility of self-starting mode locking. The company states that this approach enables stable laser startup while utilizing commercially available fiber-optic components, helping reduce system complexity, size, and overall cost.
The iQoM architecture is based entirely on passive optical components and does not incorporate active electronics or laser diodes within the module itself. This design minimizes electrically induced failure risks and allows users to integrate the module with existing laser diode and control electronics infrastructure. The all-polarization-maintaining fiber construction further enhances environmental stability, an important consideration for demanding laboratory and industrial environments.
The ultrafast laser module delivers pulse widths ranging from approximately 2-15 picoseconds, depending on the wavelength configuration, with repetition rates around 20 MHz. The generated pulses can also be compressed to femtosecond durations, enabling their use in applications requiring even shorter pulse widths. The company positions iQoM for a wide range of photonics applications, including laser micromachining, ultrafast spectroscopy, time-resolved optical measurements, terahertz research, multiphoton microscopy, bioimaging, and high-power laser seeding. These application areas continue to drive demand for compact and reliable ultrashort pulse sources that can be readily integrated into larger optical systems.
In recognition of its technological innovation, Sevensix notes that the iQoM platform received an Invention Achievement Award in Japan. Today, the product remains a key component of the company's photonics portfolio, reflecting its focus on delivering practical ultrafast laser solutions that combine reliability, longevity, and simplified system integration for research and industrial users alike.
