title: Tunable ultraslow light in vertical-cavity surface-emitting laser amplifier.
abstract: We report the experimental demonstration of tunable ultraslow light using a 1.55 um vertical-cavity surface-emitting laser (VCSEL) at room temperature. By varying the bias current around lasing threshold, we achieve tunable delay of an intensity modulated signal input. Delays up to 100 ps are measured for a broadband signal with modulation frequency of 2.8 GHz. With a VCSEL design optimized for amplification and leveraging the scalability of VCSEL arrays, delays of multiple modulation periods are feasible.
authors.forename: Xiaoxue
authors.initials: X
authors.lastname: Zhao
authors.forename: Phedon
authors.initials: P
authors.lastname: Palinginis
authors.forename: Bala
authors.initials: B
authors.lastname: Pesala
authors.forename: Connie
authors.initials: C
authors.lastname: Chang-Hasnain
authors.forename: Philip
authors.initials: P
authors.lastname: Hemmer