Amplified spontaneous emission and distributed feedback lasing from a conjugated compound in various polymer matrices

This letter presents amplified spontaneous emission (ASE) and distributed feedback (DFB) lasing of the conjugated compound, 1,4-bis[2-[4-[N,N-di(p-tolyl)amino]phenyl] vinyl]benzene, in various polymer matrices of poly(methylmethacrylate), poly(styrene) (PS), poly(vinyl butyral), poly(N-vinyl carbazole), and poly(methyl phenylsilane). Effective and large ASE intensity, lowest threshold, and maximum optical gain were measured in the PS matrix. Sharp DFB lasing with full width at half-maximum=0.6 nm was measured at 490 nm. The lasing wavelength of 490 nm was fitted well by the theoretically calculated value of 491 nm.