在紫外脉冲激光泵浦条件下,研究了有机材料EnBOD的放大自发发射(ASE)性能.EnBOD的甲苯稀溶液样品具有较窄的吸收和荧光光谱,主峰分别位于508 nm和527 nm.其ASE效率随着溶液浓度而变化,浓度为0.008 mol·L-1的EnBOD样品具有最高的ASE效率,达到22.6%.其ASE主峰位于542 nm,阈值约为29.5 kW·cm-2.阈值后的ASE半宽约为12.4 nm.经紫外脉冲激光20万次泵浦后,ASE的光强衰减为初始强度的61.2%.结果表明EnBOD是一种ASE阈值较低、光稳定性良好的激光材料.

Amplified spontaneous emission (ASE) properties of organic material EnBOD were studied under ultraviolet pulse laser pumping.EnBOD sample in dilute toluene solution shows narrow-band absorption and PL spectra,with the maximum peak located at 508 nm and 527 nm,respectively.The ASE efficiency changes with the solution concentration.The maximum ASE efficiency of 22.6% was obtained when the EnBOD sample concentration is 0.008 mol·L-1,in which the ASE threshold is 29.5 kW·cm-2,ASE peak is 542 nm and full width at half maximum is about 12.4 nm.The ASE output intensity attenuated to 61.2% of the initial strength under the pulse pump frequency of 200 000.The results indicated that EnBOD is a kind of laser material with low ASE threshold and good light stability.