HighFinesse LFR 1532nm acetylene frequency stable narrow linewidth calibration source laser 3mW absolute accuracy 2MHz

HighFinesse LFR-1532 Calibration Source is a frequency stable narrow linewidth calibration source (acetylene). The laser frequency reference LFR-1532 uses an acetylene absorption spectroscopy system, which can achieve extremely accurate frequency stability and is very suitable for calibrating our wavelength meter in the infrared wavelength range.