InAs yP 1-y metamorphic buffer layers on InP substrates for mid-IR diode lasers

  • Jeremy Kirch
  • , Toby Garrod
  • , Sangho Kim
  • , Joo H. Park
  • , Jae C. Shin
  • , L. J. Mawst
  • , T. F. Kuech
  • , X. Song
  • , S. E. Babcock
  • , Igor Vurgaftman
  • , Jerry R. Meyer
  • , Tung Sheng Kuan

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

The defect-trapping effectiveness of an InAsP metamorphic buffer layer (MBL) design was investigated by studying the light-emission characteristics of InAs quantum wells grown on the MBL, along with structural characterization through SIMS and TEM measurements. Using a fixed recipe for the MBL, several separate confinement heterostructures (SCHs) were studied using 8-band k.p simulations, HRXRD, SEM, optical microscope and variable-temperature photoluminescence. Room temperature PL was observed at wavelengths near 3 μm, although the PL intensity drops significantly for samples with wavelengths longer than 2.85 μm. Laser operation was achieved at 77 K at a wavelength of 2.45 μm and threshold as low as 290 A/cm 2.

Original languageEnglish
Pages (from-to)1165-1169
Number of pages5
JournalJournal of Crystal Growth
Volume312
Issue number8
DOIs
StatePublished - 1 Apr 2010

Keywords

  • A3. Organometallic vapor phase epitaxy
  • A3. Quantum wells
  • B1. Antimonides
  • B1. Phosphides
  • B3. Laser diodes

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