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Experimental set-up for SRG recording and ASE spectral measurements. Nd:YAG nanosecond pulsed laser, SP–beam separator, CL–convex lens, CYL–cylindrical lens, MB–movable blade, M–dichroic mirrors, BS–beam splitter, BB–beam blockade, S–sample, θ–intersection angle, F–optical fibre, SPEC–spectrometer, and PC–computer.
(Color online) Profile of recorded surface relief grating. Inset shows three dimensional visualization of created SRG.
(Color online) Normalized spectra of excitation (black line), fluorescence (pink line), amplified spontaneous emission (red line) and laser emission (blue line).
(Color online) Dependences of lasing and ASE intensity on energy density ρ of pumping light (532 nm, 6 ns). Inset shows a log-log plot of the intensity versus input energy density for lasing effect.
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