한국광학회지 (Korean Journal of Optics and Photonics)

  • 제18권3호
  • /
  • Pages.221-225
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  • 2007
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  • 1225-6285(pISSN)
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  • 2287-321X(eISSN)
한국광학회 (Optical Society of Korea)
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Bi 첨가 알루미노실리케이트 유리에서 Li 및 Ge 공첨가가 광 특성에 미치는 영향

Opticsal Characteristics of Bismuth-doped Aluminosilicate Glass Codoped with Li and Ge

  • 서영석 (한국원자력연구원 양자광학기술개발센터)
  • 발행 : 2007.06.25
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초록

근적외선에서 발광하는 새로운 증폭 매질인 Bi 첨가 알루미노실리케이트 유리의 용융 온도를 낮추면서도 증폭 특성이 향상될 수 있도록 금속 산화물을 첨가한 샘플을 제작하여 분광학적 특성을 분석하였다. $Li_{2}O$의 조성비가 증가하면 형광스펙트럼의 반폭치는 증가하지만 형광 강도가 저하되고, $GeO_{2}$의 영향으로는 반폭치와 형광 강도가 동시에 증가하였다. $GeO_{2}$를 첨가한 시료에서 광 증폭 특성을 측정한 결과, 이전의 벌크 샘플에서 얻었던 것보다 우수한 증폭 특성을 가지고 있음을 확인하였다.

The possibility of improving amplification characteristics and lowering the melting point of bismuth-doped aluminosilicate glass as a new amplification material, which has broadband near-infrared emission at 1300 nm regions, was investigated. Spectroscopic analysis of bismuth-doped aluminosilicate glass shows that the addition of an alkali metal oxide, $Li_{2}O$ increases FWHM of fluorescence spectrum but decreases fluorescence intensity, while $GeO_{2}$ composition increases both FWHM of fluorescence spectrum and fluorescence intensity. Also, excellent optical amplification gain characteristics in a $GeO_{2}$-added sample were observed.

키워드

참고문헌

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