Comparison of WGE and WGH modes for temperature compensated sapphire-rutile resonator

We present in this paper performances comparison of whispering gallery sapphire-rutile resonator excited on WGE or WGH modes. Q factor, turnover temperature, curvature and frequency stability of each mode family are presented. Frequency stability of 2.10/sup -12/ for WGH/sub 7,0,0/ and 8.10/sup -13/ for WGE/sub 9,0,0/ have been obtained for short integration times.