
Horiba high resolution spectrophotometer with resolution down to 15 pm, escpecially for emission measurement at cryogenic temperatures. Two photomultiplier tubes covering 800 - 1000 nm range and 950 - 1100 nm, respectively. Closed cycle two stage cryostat is used to cool down the sample until 10 K with heater and temperature controller attached to maintain the temperture. White light source for absorption measurement. Emission measuement is done by pumping using diode pump.