M Butkus

Publications (3)4.43 Total impact

• Article: Broadly tunable 1250 nm quantum dot-based semiconductor disk laser

  M. Butkus, C.J. Hamilton, J. Rautiainen, O.G. Okhotnikov, S.S. Mikhrin, I.L. Krestnikov, E.U. Rafailov
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  ABSTRACT: Optically pumped semiconductor disk lasers with antiresonant design based on Stranski-Krastanow-grown quantum dots are demonstrated to extend the spectral coverage of such type of devices up to 1250 nm. A continuous wave output power up to 1.6 W was achieved using an intracavity diamond heat spreader. Intracavity birefringent filter was used to tune the wavelength of the device in 25 nm range.
  IET Optoelectronics 09/2011; · 1.03 Impact Factor
• Conference Proceeding: 1270 nm quantum dot based semiconductor disk lasers

  M. Butkus, J. Rautiainen, O.G. Okhotnikov, S.S. Mikhrin, I.L. Krestnikov, E.U. Rafailov
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  ABSTRACT: Continuous wave optically pumped semiconductor disk lasers based on Stranski-Krastanow grown quantum dots reach 1270 nm for first time with the output power up to 1.6 W. Samples with different numbers of QD layers are compared.
  Semiconductor Laser Conference (ISLC), 2010 22nd IEEE International; 10/2010
• Source

  Available from: ethz.ch

  Article: High-power quantum-dot-based semiconductor disk laser.

  M Butkus, K G Wilcox, J Rautiainen, O G Okhotnikov, S S Mikhrin, I L Krestnikov, A R Kovsh, M Hoffmann, T Südmeyer, U Keller, E U Rafailov
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  ABSTRACT: We demonstrate multiwatt cw output power from an optically pumped quantum-dot semiconductor disk laser. Continuous-wave output power of 4.35 W with 22% slope efficiency was demonstrated at a center wavelength of 1,032 nm. This represents an increase in power of 15 times and an increase in slope efficiency of 10 times from the previously published results using Stranski-Krastanow grown quantum dots. An intracavity diamond heat spreader was used for thermal management. The maximum output power was limited by the available pump power, and no sign of thermal rollover was observed.
  Optics Letters 07/2009; 34(11):1672-4. · 3.40 Impact Factor