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Room temperature lasing was stably observed in air from an orthorhombic crystal of 5, 5'-bis (4'-methoxybiphenyl-4-yl) -2, 2'-bithiophene (BP2T-OMe). A pair of parallel 110 facets of the single crystal acted as effective Fabry-Pérot mirrors. This prominent lasing is based on high group refractive index (3. 5) and Q factor (4500) of the orthorhombic crystal resonator indicating a promising potential of BP2T-OMe for organic laser media.
Mizuno et al. (Wed,) studied this question.
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