Broadband optical amplifier based on a conjugated polymer

Lawrence, J. R.; Turnbull, G. A.; Samuel, I. D. W.
April 2002
Applied Physics Letters;4/29/2002, Vol. 80 Issue 17, p3036
Academic Journal
We demonstrate a compact, broadband optical amplifier using the conjugated polymer poly[2-methoxy-5-(2[sup ′],6[sup ′]-dimethyloctyloxy)-paraphenylenevinylene] (OC[sub 1]C[sub 10]–PPV) in dilute solution. Gains of 30–40 dB in a wavelength range of 575–640 nm, corresponding to a 50 THz bandwidth, are observed due to the broad luminescence spectrum and large cross section for stimulated emission of the polymer. The variation in gain as a function of solution concentration and probe intensity is examined. For a 1 cm path length we observe a small signal gain of 44±1 dB, and deduce a stimulated emission cross-section for OC[sub 1]C[sub 10]–PPV of (5.3±0.6)×10[sup -17] cm[sup 2]. © 2002 American Institute of Physics.


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