Cascaded Brillouin fibre lasers coupled to unitravelling carrier photodiodes for narrow linewidth terahertz generation. Issue 9 (1st April 2014)

• Record Type: Journal Article
• Authors: Ducournau, G.; Bacquet, D.; Szriftgiser, P.; Pavanello, F.; Peytavit, E.; Zaknoune, M.; Beck, A.; Lampin, J.‐F.
• Is Part Of: Electronics letters. Volume 50:Issue 9(2014)
• Page Start: 690
• Page End: 692
• Publication Date: 2014-04-01
• Subjects: fibre lasers -- photodiodes -- terahertz wave generation -- distributed feedback lasers; cascaded Brillouin fibre lasers -- unitravelling carrier photodiodes -- narrow linewidth THz generation -- distributed feedback lasers -- linewidth reduction factor -- frequency 1014.7 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2014.0521
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : Narrow linewidth terahertz (THz) generation using a cascaded Brillouin fibre laser structure and a unitravelling carrier photodiode is investigated. Using two distributed feedback lasers separated by > 1 THz with 1 MHz initial linewidth, the use of the cascaded Brillouin laser greatly increases the linewidth reduction factor compared to a single Brillouin laser structure. The linewidth of the realised THz source is found to be < 100 Hz at 1014.7 GHz without the use of any active stabilisation of the laser cavity or any microwave reference.