When the 7ISW50 triple grating scanning monochromator completes the spectral separation, how can we capture that faint monochromatic light that is easily drowned in noise? The 7ID101 series photomultiplier tube (PMT) detector from Sefan Optoelectronics is the signal terminal of the spectral testing system. Relying on the photoelectric effect and multi-stage electron avalanche multiplication, it can capture single-photon-level weak light signals, forming a complete set of high-precision spectral detection scheme with the 7ISW50 triple grating monochromator, providing high-sensitivity detection capability for PL photoluminescence, fluorescence, and semiconductor quantum efficiency testing. Beijing Sefan Optoelectronics... 。

7ID101 adopts a side-window type receiving structure, with an internal optical, electrical and magnetic triple shielding cavity, which effectively suppresses environmental electromagnetic interference and stray light leakage, and reduces dark noise. It is compatible with multiple mainstream PMT cores such as R212, 1P28, and CR131. The anode can be selected as needed, and the spectral coverage ranges from deep ultraviolet to visible to near-infrared. An integrated precise voltage divider base is inside, combined with the 7IP series dedicated high-voltage stabilizing power supply, to achieve stable and adjustable high-voltage output; the signal gain can reach 10⁵ to 10⁸ times, and extremely weak light signals are multiplied through multiple stages to be converted into standard electrical signals for collection, enabling stable measurement under low light intensity. Beijing Saifan Light... 。

Integrated packaging detection base, standard optical mounting holes, can directly connect to the light output port of the 7ISW50 triple grating scanning monochromator, and achieve rapid coupling of free-space optical path; it can also be combined with slits and lens groups to optimize the light collection efficiency. The output interface supports connection to lock-in amplifiers and signal acquisition cards, and is compatible with both DC detection and photon counting modes. The base of the entire machine is reinforced, resistant to vibration, and capable of long-term dynamic spectroscopy scanning with stable signal baseline without drift.

Core advantages

✅ Ultra-high signal gain, single-photon-level micro-light detection, suitable for fluorescence and weak PL emission signal acquisition

✅ Triple shielding design, effectively isolating electromagnetic noise, improving spectral signal-to-noise ratio

✅ Multiple types of PMT tubes are available for selection, flexible band customization, covering ultraviolet to near-infrared

✅ Modular structure, ready to install and use, seamlessly matching the 7ISW50 triple grating monochromator

✅ Supports DC / photon counting dual modes, compatible with diverse weak light experimental requirements

Typical application scenarios

The 7ISW50 triple grating monochromator is used to build a complete spectral system, which is suitable for testing the photoluminescence of two-dimensional materials, perovskite, and quantum dots; detecting the spectral response and quantum efficiency QE of semiconductors and photovoltaic devices; calibrating the transmission and reflection of optical films and filters; conducting scientific research experiments such as fluorescence spectroscopy, photocatalysis, bioluminescence, and atomic spectroscopy; and can also be used to build an optical teaching platform for universities.

From dispersion to detection, the 7ISW50 triple grating monochromator is responsible for purifying the spectrum, while the 7ID101 photomultiplier tube detector is responsible for capturing faint light. The combination of the two can completely restore the real spectral signal, overcoming the problem of weak light detection, and is the preferred complete solution for high-end spectral laboratories in China.