SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "swepub ;pers:(Larsson Anders);pers:(Larsson Anders 1957);pers:(Sujecki S.);pers:(Wang Shumin 1963);pers:(MacKenzie R.)"

Sökning: swepub > Larsson Anders > Larsson Anders 1957 > Sujecki S. > Wang Shumin 1963 > MacKenzie R.

  • Resultat 1-10 av 11
  • [1]2Nästa
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  •  
2.
  •  
3.
  • Lim, J. J., et al. (författare)
  • Static and dynamic performance optimisation of a 1.3 mu m GaInNAs ridge waveguide laser
  • 2008
  • Ingår i: Optical and Quantum Electronics. - 0306-8919. ; 40:14-15, s. 1181-1186
  • Tidskriftsartikel (refereegranskat)abstract
    • In this work, we perform a multi-parameter design study to improve the performance of an uncooled directly modulated 1.3 mu m GaInNAs ridge waveguide laser for high speed operation especially at high temperature. The static and dynamic performance of the improved design is analyzed using an accurate in-house 2D electro-opto-thermal laser simulator. The improved structure is shown to have a lower threshold current, higher thermal roll-over limit and higher modulation bandwidth-especially under high temperature operation. The improved structure also has a lower vertical beam divergence compared to a reference structure with a conventional design.
  •  
4.
  •  
5.
  •  
6.
  • Lu, W, et al. (författare)
  • Reliability assessment and degradation analysis of 1.3 µm GaInNAs lasers
  • 2009
  • Ingår i: Journal of Applied Physics. - 0021-8979. ; 106:9
  • Tidskriftsartikel (refereegranskat)abstract
    • The degradation of 1.3 mu m GaInNAs lasers was investigated using accelerated aging tests. This was followed by comprehensive characterization, including standard light-current-voltage (L-I-V) characterization, capacitance measurements, photoluminescence microscopy (PLM), on-axis amplified spontaneous emission (ASE) spectra measurements, and photocurrent (PC) and electroluminescence (EL) spectroscopies. The slope efficiency of the device dropped by 50% with a 300% increase in the threshold current after the accelerated aging test. The ideality factors of the aged devices are higher than those of the unaged devices. PLM images showed no evidence of catastrophic optical mirror damage. The measured capacitances of the aged devices are all similar to those of the unaged devices, indicating that there was no significant dopant diffusion in the junction region. Fourier transforms of the ASE spectra showed that no intracavity defects were present in the aged lasers, suggesting that intracavity defects are not responsible for the rapid degradation of the aged devices. Although the PC measurements showed defects at 0.88-0.95 eV and at similar to 0.76 eV, these defect signatures did not increase with aging. On the other hand, EL measurements revealed that radiative deep level defects were generated during the aging tests. which may be related to the degradation of the devices. Based on the above measurement results, we identify, the generation Of radiative deep level defects as the main causes of degradation of these devices.
  •  
7.
  •  
8.
  •  
9.
  •  
10.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 11
  • [1]2Nästa
 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy