DIRECT OBSERVATION OF THE EXCESS LIGHT HOLE POPULATION IN OPTICALLY PUMPED p-TYPE GERMANIUM
- 1 September 1966
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 9 (5) , 186-187
- https://doi.org/10.1063/1.1754702
Abstract
We report the direct observation of conductivity modulation by heavy‐to‐light hole transitions in p‐type germanium. The resistance of a p‐type germanium bar was modulated by microsecond pulses of 10‐μ radiation from a Q‐switched CO2 laser. An estimate of the fast carrier lifetime is 10−12 sec. Direct observation of 20‐Mc ringing on the laser pulse is reported. The band‐to‐band type of transition permits room temperature operation.Keywords
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