Black phosphorus saturable absorber for ultrafast mode-locked pulse laser via evanescent field interaction

Title
Black phosphorus saturable absorber for ultrafast mode-locked pulse laser via evanescent field interaction
Authors
박기철이준수이영택최원국이주한송용원
Keywords
black phosphorus; saturable absorber; mode-locked laser; fiber lasers; ultrafast pulses
Issue Date
2015
Publisher
Annalen der Physik
Citation
VOL 527, NO 11-12, 770-776
Abstract
Black phosphorus, or BP, has found a lot of applications in recent years including photonics. The most recent studies have shown that the material has an excellent optical nonlinearity useful in many areas, one of which is in saturable absorption for passive mode-locking. A direct interaction scheme for mode-locking, however, has a potential to optically cause permanent damage to the already delicate material. Evanescent field interaction scheme has already been proven to be a useful method to prevent such danger for other 2-dimensional nanomaterials. In this report, we have utilized the evanescent field interaction to demonstrate that the optical nonlinear characteristics of BP is sufficiently strong to use in such an indirect interaction method. The successful demonstration of the passive mode-locking operation has generated pulses with the pulse duration, repetition rate, and time bandwidth product of 2.18 ps, 15.59 MHz, and 0.336, respectively.
URI
http://pubs.kist.re.kr/handle/201004/50453
ISSN
00033804
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KIST Publication > Article
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