Organic lasers based on Fِrster transfer

The light amplification characteristics of organic guest-host systems with Fِrster transfer from absorbing small molecule hosts to dye/ polymer dopants are described. Such material systems are shown to be very promising for use in low-threshold organic lasers. A number of laser resonators have been experimentally realized with Fِrster gain media including microdisk, ring, spheroid, and distributed Bragg reflector lasers.