Distributed feedback laser action from polymeric waveguides doped with oligo phenylene vinylene model compounds

Kretsch, Kevin P.; Blau, Werner J.; Dumarcher, V.; Rocha, Licinio; Fiorini, C.; Nunzi, Jean‐Michel; Pfeiffer, Steffen; Tillmann, H.; Hörhold, Hans‐Heinrich

doi:10.1063/1.126281

Cited by 37 publications

(11 citation statements)

References 10 publications

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“…18 Also, Kretsch et al demonstrated distributed feedback lasing from SP35 incorporated in a polystyrene waveguide. 19 Figure 1 shows the absorption cross-section spectrum of SP35 in ortho-xylene. The absorption crosssection of 10 -17 cm 2 at 355 nm is sufficiently large for the molecules to undergo population inversion when they are photoexcited by the third harmonic output of a Nd: YAG laser.…”

Section: Methodsmentioning

confidence: 99%

Light amplification and lasing in doped polymer optical fibers

et al. 2003

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We report on a large optical gain, over the wide spectral range, and lasing in a glass-clad polymer optical fiber that uses a novel highly fluorescent stilbenoid compound, 1,4-bis(4-diphenylamino-styryl)-benzene. The compound has a high quantum yield of 0.85 in polystyrene and a large Stokes shift of about 80 nm. A fiber doped with 0.2-wt. % of the compound is photoexcited with a thin striped shape area at 355 nm with nanosecond optical pulses, and the emission from one end is monitored as a function of the excitation length to deduce the net gain coefficient. The gain spectroscopy has revealed a broad optical gain exceeding 25 cm -1 and up to 36 cm -1 at 494 nm that covers a spectral range of about 70 nm when the fiber is transversely photoexcited at 12 mJ/cm 2 . The large gain has been utilized to demonstrate blue laser emission at 489 nm from the fiber (which is only 1.4 cm in length) in a low finesse cavity defined by the Fresnel reflections at the fiber-air interfaces. The threshold for lasing is found to be 1.7 mJ/cm 2 .

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Section: Methodsmentioning

confidence: 99%

Light amplification and lasing in doped polymer optical fibers

et al. 2003

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“…Tuning is simply achieved by changing the angle between two interfering pump beams. Broad band tuning range has been demonstrated in several polymer materials using this configuration 4,5,6,7 . In this paper, we study and discuss by means of linear planar waveguide theory the modal content of the laser emission in DCM-dye doped PVK-polymer films 8 .…”

Section: Introductionmentioning

confidence: 95%

Multicolor emission in dye-doped polymer thin film DFB lasers

2003

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We present a study of Distributed Feedback (DFB) Laser emission in polymer thin films. This laser scheme permits efficient control of the stimulated emission in dye doped polymer materials. Optical feedback is provided by distributed Bragg gratings formed in the film by interference patterns from the pump beam. We report on particular features of the thin film DFB lasers. Devices are optically pumped using a Lloyd-mirror interferometer. For a given DFB grating period, the number of lasing modes depends on film thickness. Spectral content of the devices can be analyzed using planar waveguide theory. An excellent agreement between the theoretical transverse electric mode structure and the laser emission spectrum is found. We report for the first time on another scheme in which two DFB gratings are optically excited. There results a multicolor laser emission. This new scheme can interpreted in terms of a degenerate four wave mixing (DFWM) process in which the coherent interaction between pump waves in the luminescent material is monitored by laser emission.

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“…Broad band tuning range has been demonstrated in several polymer materials using this configuration [11][12][13]. In this paper, we study and discuss by means of linear planar waveguide theory the modal content of laser emission in DCM-dye-doped PVK-polymer films.…”

Section: Introductionmentioning

confidence: 98%