NEAR AND FAR INFRARED ABSORPTION IN CR DOPED ZNSE

The optical absorption in Cr doped ZnSe has been measured for photon wavenumbes,, ν, from 2 cm-1 to the bandedge at about 20 000 cm-1 for temperatures from 1.2 to 300°K. The Cr produces an extremely sharp absorption line at ν = 7.43 cm-1, additional broad absorption lines between 50 and 100 cm-1, a broad absorption band at 5500 cm-1, and some further structure at higher energies. As we will show, these results support the conclusion of earlier paramagnetic resonance studies that a static Jahn-Teller distortion of E symmetry is present in the ground state for Cr2+ ions in ZnSe. © 1969.