Stimulated emission from aluminium anode oxide films doped with rhodamine 6G. (July 2015)

• Record Type: Journal Article
• Authors: Ibrayev, N.Kh.; Zeinidenov, A.K.; Aimukhanov, A.K.; Napolskii, K.S.
• Is Part Of: Quantum electronics. Volume 45:Number 7(2015)
• Page Start: 663
• Page End: 667
• Publication Date: 2015-07
• Subjects: Quantum electronics -- Periodicals; 537.5
• DOI: 10.1070/QE2015v045n07ABEH015533
• Languages: English
• ISSNs: 1063-7818

Abstract

<abstract> <title>Abstract</title> <p>The spectral and luminescent properties of the rhodamine 6G dye in a porous matrix of aluminium anode oxide are studied. The films with a highly-ordered porous structure are produced using the method of two-stage anodic oxidation. By means of raster electron microscopy it is found that the diameter of the pores amounts to nearly <inline-formula id="i1"><tex-math><?CDATA $50\ {\text{nm}}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmgh6" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula> and the separation between the adjacent channels is almost <inline-formula id="i2"><tex-math><?CDATA $105\ {\text{nm}}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmhg5" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula>. The thickness of the films is equal to <inline-formula id="i3"><tex-math><?CDATA $55\ \unicode{956}{\text{m}}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmhch" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula>, and the specific surface area measured using the method of nitrogen capillary condensation is <inline-formula id="i4"><tex-math><?CDATA $15.3\ {\text{m}}^{2}\ {\text{g}}^{-1}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmh4n" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula>. Fluorescence and absorption spectra of rhodamine 6G molecules injected into the pores of the aluminium anode oxide are measured. It is found that under the excitation of samples with the surface dye concentration <inline-formula id="i5"><tex-math><?CDATA $0.3 \times 10^{14}\ {\text{molecules}}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmgvq" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula><inline-formula id="i6"><tex-math><?CDATA ${\text{m}}^{-2}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmg9w" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula> by the second harmonic of the Nd : YAG laser in the longitudinal scheme with the pumping intensity <inline-formula id="i7"><tex-math><?CDATA $0.4\ {\text{MW cm}}^{-2}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmg7s" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula>, a narrow band of stimulated emission with the intensity maximum at the wavelength <inline-formula id="i8"><tex-math><?CDATA $572\ {\text{nm}}$?></tex-math><inline-graphic xlink:href="ark:/27927/pgj2j5zmgf3" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></inline-formula> appears against the background of the laser-induced fluorescence spectrum. A further increase in the pumping radiation intensity leads to the narrowing of the stimulated emission band and an increase in its intensity. The obtained results demonstrate the potential possibility of using the porous films of aluminium anode oxide, doped with laser dyes, in developing active elements for quantum electronics.</p> </abstract>