紫色发光二极管激发下钐掺杂的重金属硅酸盐玻璃的辐射通量与光通量(英文)

采用积分球测试系统配以内芯直径为400μm的功率光纤连接的CCD探测器,在紫色发光二极管的激发下,对Sm3+掺杂的重金属硅酸盐(CAS)玻璃的荧光光谱进行了表征,实现了以荧光发射特性绝对评价为目的绝对光谱功率分布测定,进一步求得了辐射通量,光通量等荧光特征参数。测试与计算结果表明,在整个可见光谱区域,总的辐射通量和光通量分别为712μW和12.1 mlm,其中Sm3+的4个特征发射峰的辐射通量和光通量分别为36μW和9.7 mlm,占可见区总量的5%和80%,其可见特征发射的总量子产率为2.3%。Sm3+掺杂CAS玻璃可见区多通道辐射跃迁的绝对光谱参数评估为照明和显示器件的研发提供了有益的参考依据。

Radiant and Luminous Fluxes of Sm3+ Doped Heavy Metal Silicate Glass under The Excitation of Violet Light Emitting Diode

Optical radiative parameters for multichannel visible transition emissions have been determined in Sm3+-doped cadmium-aluminum-silicate (CAS) glass under the excitation of a violet light emitting diode (LED). For the derivation, the necessary fluorescence spectra were measured and calibrated in an integrating sphere, which was connected to a CCD detector with a 400 μm-core optical fiber. The spectral power distribution and luminous flux distribution of the sample under the violet LED excitation have been obtained. And the total radiant flux and total luminous flux for the entire visible region have been calculated to be 712 μW and 12.1 mlm, respectively. The radiant flux and luminous flux for the four visible emission bands of Sm3+ were derived to be 36 μW and 9.7 mlm, which occupied 5% and 80% of the whole. The total quantum yield of the visible fluorescence of Sm3+ is 2.3%. Investigations on absolute spectral parameters for multichannel visible transition emissions of Sm3+ in CAS glass provide a valuable reference for heavy metal silicate glass in developing efficient display and illumination devices.