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Perylenediimide-based distributed feedback lasers with holographic relief gratings on dichromated gelatine
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10.1063/1.4813873
/content/aip/journal/jap/114/3/10.1063/1.4813873
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/3/10.1063/1.4813873

Figures

Image of FIG. 1.
FIG. 1.

Emission linewidth as a function of pump intensity for PDI-C6-doped PS films deposited over 600 nm-thick DCG layers without gratings (circles, stars, and squares for film thickness ( ) of 600, 950, and 1100 nm, respectively) and over fused silica (triangles,  = 600 nm); The inset shows the corresponding ASE spectra: films with values of 600, 950, and 1100 nm over DCG (dashed, dotted, and full lines, respectively) and  = 600 nm over fused silica (dashed-dotted line).

Image of FIG. 2.
FIG. 2.

Electric field profiles for TE modes, calculated from the propagation wave equation at λ = 579 nm for a waveguide of thickness  =  (suffix refers to PDI-C6-doped PS film) and refractive index  =  , deposited over a DCG substrate (  =  and  = ∞).

Image of FIG. 3.
FIG. 3.

Effective refractive index ( ) for TE modes as a function of  +  : symbols are experimental values determined by the m-line technique at λ = 578 nm for  = 600 nm (squares) and  = 1100 nm (triangles) and full lines are calculations from the propagation wave equation for a waveguide of thickness  =   +  (  = 600 nm in all cases) and refractive index (obtained from Eq. (2) ) deposited over a fused silica substrate (  =  and  = ∞).

Image of FIG. 4.
FIG. 4.

(a) Scheme of the DFB device; (b) SEM image, and (c) AFM profile of a relief grating with Λ = 378 nm and d = 80 nm, recorded over a DCG layer (  = 600 nm) deposited over fused silica.

Image of FIG. 5.
FIG. 5.

(a) Emission spectra (above threshold) of DFB lasers based on PDI-C6-doped PS films (  = 1100 nm) deposited on DCG layers (  = 600 nm) with gratings of various periods (Λ) and ASE spectrum of a similar film deposited over a uniform DCG layer; (b) Output intensity at for the DFB lasers whose data are displayed in (a).

Image of FIG. 6.
FIG. 6.

Emission spectra (above threshold) of DFB lasers based on PDI-C6-doped PS films (  = 600 nm) deposited on DCG layers (  = 190 nm) with gratings of various periods (Λ) and ASE spectrum of a similar film deposited over a uniform DCG layer.

Tables

Generic image for table
Table I.

Laser performance of DFB lasers based on PDI-C6-doped PS films (  = 1100 nm) deposited on DCG layers (  = 600 nm).

Generic image for table
Table II.

Laser performance of DFB lasers based on PDI-C6-doped PS films deposited on DCG layers (  = 190 nm).

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/content/aip/journal/jap/114/3/10.1063/1.4813873
2013-07-17
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Perylenediimide-based distributed feedback lasers with holographic relief gratings on dichromated gelatine
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/3/10.1063/1.4813873
10.1063/1.4813873
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