Temperature dependence of the FIR reflectance of LaSrGaO4

The reflectance of single crystal LaSrGaO4 has been measured from ∼ 50 to 40000 cm−1 along the a and c axes. The optical properties have been calculated from a Kramers-Kronig analysis of the reflectance for both polarizations. The reflectance curves have been fit using a product of Lorentzian oscilltors.