Complementary pumping mechanisms of lambda-half organic microcavities

R. Brückner; M. Sudzius; V. G. Lyssenko; H. Fröb; K. Leo

doi:10.1117/12.854369

18 May 2010 Complementary pumping mechanisms of lambda-half organic microcavities

R. Brückner, M. Sudzius, V. G. Lyssenko, H. Fröb, K. Leo

Proceedings Volume 7722, Organic Photonics IV; 772207 (2010) https://doi.org/10.1117/12.854369
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

We investigate high finesse organic planar microcavities under different optical pumping conditions. The design of the cavities is chosen to realize the smallest possible cavity thickness of λ/2. We use different coherent light sources to pump the structures optically. 120 fs pulses out of an amplifier system and pulses of 1 ns length from a 532 nm solid state laser are applied. Emission properties of an organic microcavity are further investigated when incoherent light, emitted from an inorganic light emitting diode, is used to excite the cavity layer. A monolithically integrated device is realized, where a high quality organic microcavity is deposited directly onto the surface of a light emitting diode. A set of modified rate equations is applied to simulate input-output curves of different organic microcavities under different optical pumping conditions. In addition to the modified spontaneous emission rates due to the resonator, which are described by the standard set of rate equations, our model takes the finite number of the molecules per mode into account. This limits the upper bound for the number of photons emitted into the mode since absorption saturation takes place during the pumping process by short optical pulses. An analysis of the experimental results show that this effect can substantially modify the lasing characteristics of lambda-half organic microcavities.

Citation Download Citation

R. Brückner, M. Sudzius, V. G. Lyssenko, H. Fröb, and K. Leo "Complementary pumping mechanisms of lambda-half organic microcavities", Proc. SPIE 7722, Organic Photonics IV, 772207 (18 May 2010); https://doi.org/10.1117/12.854369

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