Regensburg 2010 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 18: Focussed Session: Strong Light Matter Coupling I

HL 18.3: Vortrag

Dienstag, 23. März 2010, 10:30–10:45, H13

Higher Order Photon Bunching in a Semiconductor Microcavity — •Franziska Veit¹, Marc Aßmann¹, Manfred Bayer¹, Mike van der Poel², and Jorn M. Hvam² — ¹Experimentelle Physik II , TU Dortmund , D-44221 Dortmund, Germany — ²DTU Fotonik, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark

We were able to show the statistical behaviour of photons in the single mode emission of a semiconductor microcavity by determining the correlation function g⁽ⁿ⁾ (τ, t) of the emitted light up to fourth order. We studied the photon correlation in the weak as well as in the strong coupling regime. Our setup using a modified streak camera allowed us to directly record the photon counting statistics with picosecond time resolution. Therefore, we had the possibility to perform measurements of the photon bunching with a time resolution comparable to the coherence time of the light, allowing us to address g⁽ⁿ⁾ (τ, t) inside the light pulses instead of just between them.
We can illustrate bunching behaviour in the strong coupling regime whereas in the weak coupling regime the cavity starts lasing and therefore the photon bunching vanishes leading to statistically independent photon emission. For the first time the n! prediction for the zero delay correlation function g⁽ⁿ⁾(τ = 0) of n thermal light photons could be verified.