Title :
Longitudinal holograms for digital frequency selection and electronic tuning in terahertz quantum cascade lasers
Author :
Chakraborty, Shiladri ; Marshall, Owen ; Khairuzzaman, Md ; Beere, H. ; Ritchie, D.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
Terahertz (THz) quantum cascade lasers (QCL) operating round 2.9 THz are modified with longitudinal computer-generated hologram (LCGH) structures <;3 mm in total length to achieve purely electronic discrete tuning on six modes spanning over 160 GHz. The behavior and digital frequency selection offered by LCGH QCLs is shown to be reproducible.
Keywords :
computer-generated holography; laser tuning; quantum cascade lasers; digital frequency selection; electronic tuning; frequency 160 GHz; frequency 2.9 THz; longitudinal computer-generated hologram structures; purely electronic discrete tuning; terahertz quantum cascade lasers; Laser modes; Laser tuning; Milling; Performance evaluation; Quantum cascade lasers; Resonant frequency;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
Conference_Location :
Amsterdam
