4.3um High-Power Desktop DFB-QCL Mid-Infrared Quantum Cascade Laser (Desktop Light Source)

4.3um high power benchtop DFB-QCL mid-infrared quantum cascade laser is a mid-infrared test laser developed by Idealphotonics in the first half of 2019. The low loss of the atmospheric window is conducive to the test research of space optical communications. Our benchtop light source has high power and does not require ITAR review, which is an excellent choice for commercial mid-infrared test light sources. Our laser has built-in Znse collimated output, stable output power, and high temperature and wavelength stability, which is several orders of magnitude higher than the stability of traditional high-power quantum cascade lasers.

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Stabiλaser 1542ε – Acetylene‑Stabilized Fiber Laser

The Stabiλaser 1542ε (epsilon version) is a second-generation acetylenestabilized fiber laser. It offers the same narrow linewidth, excellent long-term stability, and high precision as its predecessor. The design retains the short-term linewidth of a high-end fiber laser while adding the longterm stability and accuracy derived from acetylene molecular transitions. As a high-performance laser source, it operates continuously and troublefree without user intervention. By combining the Stabiλaser 1542ε with an all-fiber frequency-doubling technique, an additional output at 771 nm can be obtained. This solution ensures that the 771 nm signal inherits the excellent short-term linewidth and long-term stability of the Stabiλaser 1542. The Stabiλaser 1542ε can deliver 1 mW of power at both 771 nm and 1542 nm. This solution can later be used to upgrade the Stabiλaser 1542ε.

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2800±20 nm, 35 mW ，35 MHz Mid‑Infrared Ultrafast Fiber Pulsed Laser

Femtum, as a solution expert in mid-infrared ultrafast fiber lasers, has developed the world's advanced mid-infrared ultrafast laser. It provides excellent parameters and performance for innovative fiber lasers, intended for mid-infrared scientific research.

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3–3.4 μm Ultrafast broadband tunable mid-infrared fiber laser

This is a commercial ultrafast, broadband, tunable mid-infrared fiber laser based on erbium-doped fluoride fiber technology, operating in the 3–3.4 μm wavelength range. Employing an all-fiber architecture and automatic mode-locking design, it delivers femtosecond-level pulse output while supporting wide spectral tuning. With its compact structure, high stability, and maintenance-free operation, it serves as an ideal light source for advanced scientific research and industrial applications, including high-sensitivity spectroscopy, nonlinear frequency conversion, precision processing of polymer materials, and biomedical imaging.

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395 nm Narrow Bandpass Optical Filter

The MP-NBP-395 is a narrow bandpass filter with a centre operating wavelength of approximately 395 nm. It is designed to selectively transmit the 389.5-400.5 nm band while efficiently blocking most out-of-band light from 200 nm to 925 nm. The filter exhibits an average transmission greater than 85 % in the passband and provides deep blocking with an average optical density greater than 6 over the 417-670 nm range, effectively suppressing UV, visible, and near-infrared background signals to improve the signal-to-noise ratio in fluorescence detection, spectral analysis, and precision imaging systems. The product comes in a 25 mm round mounted format and is suitable for optical systems operating at near‑normal incidence.

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360 nm Bandpass Filter

The 360 nm Bandpass Filter is a high-performance narrowband filter designed for ultraviolet fluorescence detection, life sciences, microscopy imaging, and spectral analysis. Manufactured with precision multi-layer dielectric coatings, it provides high transmission around the 360 nm centre wavelength while offering deep blocking of out-of-band light, effectively suppressing stray light and improving system signal-to-noise ratio and detection accuracy. Its excellent spectral performance, stable environmental reliability, and precise fabrication quality make it suitable for advanced optical systems in research, industrial inspection, and medical devices.

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280 nm Bandpass Filter

The MP-BPF-280 is a high-performance bandpass filter designed for ultraviolet (UV) spectral applications. It features a center wavelength of 280 nm and a full width at half maximum (FWHM) of 22 nm. Manufactured with advanced hard dielectric coatings, the filter provides excellent transmission in the target band while offering deep blocking of visible light and out-of-band UV wavelengths, effectively improving system signal-to-noise ratio. This filter is suitable for UV fluorescence detection, UV imaging, life science analysis, environmental monitoring, UV laser systems, and other applications, making it a critical optical component in research and industrial instruments.

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355 nm Laser Line Bandpass Filter

The MPLLF355 is a highperformance narrowband interference filter specifically designed for the 355 nm laser wavelength. Manufactured on highquality fused silica substrates with multilayer hard dielectric coatings, it provides high transmission (T > 80%) at the 355 nm laser wavelength while offering deep outofband blocking up to ODabs > 6 on both sides of the passband. This effectively improves the signaltonoise ratio and spectral purity of laser systems. With a narrow FWHM bandwidth of only 1.3 nm, the filter features narrow bandwidth, high transmission, and deep blocking, enabling selective transmission of the 355 nm laser line. It is widely used in thirdharmonic Nd:YAG laser systems, UV Raman spectroscopy, laserinduced fluorescence (LIF), semiconductor inspection, UV imaging, and scientific instrumentation.

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355 nm Ultrasteep Long Pass Filter

The MP-LPF-355 is a high-performance ultra-steep long-pass interference filter specifically designed for 355 nm laser Raman spectroscopy applications. Manufactured on high-quality fused silica substrates with precision multi-layer dielectric coatings, it provides high blocking (OD > 6) at the 355 nm laser wavelength while offering high average transmission (T_avg > 93%) over the 359.6-800.8 nm spectral range. With an Ultra-steep edge design, the filter has an edge wavelength of 357.8 nm and a transition width of only 3.6 nm (279 cm-1), with an edge steepness of 0.5% / 140.1 cm-1. It effectively suppresses the 355 nm laser line, Rayleigh scattering, and short-wavelength stray light, while efficiently transmitting longer-wavelength Raman scattering signals, thereby improving the detection sensitivity and signal-to-noise ratio of Raman spectroscopy systems. The filter is widely used in 355 nm UV laser Raman spectroscopy, laser spectral analysis, laser-induced fluorescence, UV spectral detection, research instruments, and precision optical systems.

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325 nm Laser Line Bandpass Filter

The MP-LLF-325 is a high-performance narrow-band interference filter specifically designed for the 325 nm laser wavelength. Manufactured on high-quality fused silica substrates with multi-layer dielectric coatings, it provides high transmission (T > 80%) at the 325 nm laser wavelength while offering deep out-of-band blocking up to OD > 6 on both sides of the passband. It effectively filters background light and stray light outside the target band, improving the signal-to-noise ratio and detection accuracy of optical systems. With a narrow FWHM bandwidth of only 1.2 nm, the filter features narrow bandwidth, high transmission, and deep blocking, making it suitable for optical systems that require high selectivity for the 325 nm laser line. The filter is widely used in 325 nm UV laser systems, He‑Cd lasers, UV Raman spectroscopy, laser-induced fluorescence, spectral analysis, UV imaging, and scientific instrumentation.

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325 nm Ultrasteep Long Pass Filter

The MP-LPF-325 is a high-performance ultra-steep long-pass interference filter specifically designed for 325 nm laser Raman spectroscopy applications. Manufactured on high-quality fused silica substrates with precision multi-layer dielectric coatings, it provides high blocking (OD > 6) at the 325 nm laser wavelength while offering high average transmission (T_avg > 90%) over the 329.2-733.1 nm spectral range. With an Ultra-steep edge design, the filter has an edge wavelength of 327.5 nm and a transition width of only 3.3 nm (305 cm-1), with an edge steepness of 0.5% / 153.1 cm-1. It effectively suppresses the 325 nm laser line, Rayleigh scattering, and short-wavelength stray light, while efficiently transmitting longer-wavelength Raman scattering signals. This significantly improves the signal-to-noise ratio and weak Raman signal detection capability of spectroscopy systems. The filter is suitable for 325 nm laser Raman spectroscopy, UV Raman spectroscopy, laser spectral analysis, fluorescence detection, materials analysis, and research optical instruments.

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248.6 nm Ultrasteep Long Pass Filter

The MP-LPF-244 is an ultrasteep long pass filter designed specifically for the 244 nm laser line, primarily used in UV Raman spectroscopy, fluorescence detection, laser spectrum analysis, and other precision ultraviolet optical systems. This filter offers high blocking performance with OD > 6 at 244 nm, and provides an average transmittance greater than 90% over the 247.6–550.4 nm band. With a transition width of only 3 nm, it features an extremely steep spectral edge, effectively suppressing the laser line and Rayleigh scattering while improving the collection of Raman signals close to the laser wavelength. The filter is fabricated on a fused silica substrate and mounted in a 25 mm diameter circular metal ring, making it suitable for research-grade Raman spectrometers, fluorescence spectrometers, and custom optical systems.

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