Polymer optical amplifier

Wang S, Bazan GC (2003) Optically amplified RNA-protein detection methods using lightharvesting conjugated polymers. Adv Mater 15 1425-1428... 

Up-conversion and excited state absorption are the main gain-limiting factors in Er111-doped planar optical amplifiers, either glass- or polymer-based. Up-conversion increases the pump power required to achieve a certain degree of population inversion, up to factors... 

The photophysical properties of terphenyl-based acyclic (22a) and cyclic hemispherands (22c, 22d, see fig. 27) have been investigated in organic solvents and in KBr pellets (1 wt%) with the purpose of introducing them later in optical amplifiers (Sloofif et al., 1998). Absorption cross sections for the 1.54 pm emission, which is quite broad with fwhh = 70 nm, amount to 0.62, 1.1, and 0.93 x 10 20 cm2 for [Er(22a)], [Er(22c)] and [Er(22d)], respectively. The best photoluminescence intensities are obtained with the cyclic ligands. The optical gain of the complexes doped into a polymer channel waveguide is on the order of 1.7 dB cm-1, while the threshold power is as low as 1.4 mW. 

Recent studies using P2 have shown that it can be used to optically amplify fluorescent DNA assays [74]. The method comprises two components (a) the light harvesting luminescent conjugated polymer P2 and (b) a probe oligonucleotide consisting of a peptide nucleic acid (PNA) labeled with a reporter dye... 

High-Power Polymer Optical Fiber Amplifiers in the Visible Region... 

T., and Sasaki, K. (1995) Basic performance of an organic dye-doped polymer optical fiber amplifier. Appl. Opt., 34, 988-992. 

High gain and high power organic dye-doped polymer optical fiber amplifiers absorption and emission cross sections and gain characteristics. Jap. Journal of Appl. Phys., 36, 2705-2708. 

Polydiacetylenes are polymers showing a one-dimensional semiconducting behaviour. This one-dimensional structure causes exceptionally high third order non-linearities [100], also in off-resonant wavelength regions [101], with extremely short sub-picosecond switching times [102]. After this discovery it was believed that an optical amplifying switch (optical transistor) or even an optical computer was close at hand. 

Lanthanide complexes, including lanthanide -diketonate complexes, have been often tested as a luminescent materials in polymer optical fiber amplifiers and in plartar optical waveguides. This research has been reviewed by KirriM et al. (2002). 

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