A 8 channel Array Spectroscopic Measurement System for 1-2μm Near Infrared Low Level Light

Abstract

A low noise 8 channel spectroscopic measurement system for 1-2μm near infrared region was developed. Using commercially available InGaAs PIN photodiode with charge integrating amplifier, the minimum detectable power of 10^-14 W were achieved in all channels. The simultaneous measurement wavelength range of the system was from 1060 to 1550 nm. The spectral resolution of the system was 70 nm at 1 channel. This is the first near infrared spectroscopic polychromator using the multi-channel ultra low nosise array detector.
We demonstrate the measurement of the spectrum of singlet oxygen using this system.