Title :
Single grating period quantum cascade laser array with broad wavelength tuning range
Author :
Kennedy, Krista ; Revin, D.G. ; Commin, J.P. ; Krysa, A.B. ; Semtsiv, Mykhaylo P. ; Chashnikova, M. ; Masselink, W. Ted ; Cockburn, J.W. ; Hogg, R.A.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield
Abstract :
A distributed feedback quantum cascade laser array emitting at lambda~10 mum is reported. Utilising a ridge width dependence on emission wavelength, the array of laser ridges exhibited a tuning range in excess of 230 nm over the temperature range of 140 to 380 K. Singlemode operation with sidemode suppression ratios of ges 25 dB and a combined tuning coefficient of -0.1 cm-1 K-1 are demonstrated.
Keywords :
distributed feedback lasers; laser tuning; quantum cascade lasers; semiconductor laser arrays; broad wavelength tuning; distributed feedback quantum cascade laser array; emission wavelength; laser ridge array; sidemode suppression ratios; single grating period; single mode operation; temperature 140 K to 380 K; tuning coefficient;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20082362
