Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Journal articles
  4. Continuous-wave vertically emitting photonic crystal terahertz laser
 
research article

Continuous-wave vertically emitting photonic crystal terahertz laser

Diao, Zhaolu  
•
Bonzon, Christopher
•
Scalari, Giacomo
Show more
2013
Laser & Photonics Reviews

Compact semiconductor light sources with high performance continuous-wave (CW) and single mode operation are highly demanded for many applications in the terahertz (THz) frequency range. Distributed feedback (DFB) and photonic crystal (PhC) quantum cascade (QC) lasers are amongst the leading candidates in this field. Absorbing boundary condition is a commonly used method to control the optical performance of a laser in double-metal confinement. However, this approach increases the total loss in the device and results in a large threshold current density, limiting the CW maximum output power and operating temperature. In this letter, a robust surface emitting continuous wave terahertz QC laser is realized in a two-dimensional PhC structure by a second order Bragg grating extractor that simultaneously provides the boundary condition necessary for mode selection. This results in a 3.12 THz single mode CW operation with a 3 mW output power and a maximum operation temperature (T-max) of 100 K. Also, a highly collimated far-field pattern is demonstrated, which is an important step towards real world applications.

  • Details
  • Metrics
Type
research article
DOI
10.1002/lpor.201300035
Web of Science ID

WOS:000326093800003

Author(s)
Diao, Zhaolu  
•
Bonzon, Christopher
•
Scalari, Giacomo
•
Beck, Mattias
•
Faist, Jerome
•
Houdre, Romuald  
Date Issued

2013

Publisher

Wiley-VCH Verlag Berlin

Published in
Laser & Photonics Reviews
Volume

7

Issue

5

Start page

L45

End page

L50

Subjects

Terahertz

•

quantum cascade laser

•

photonic crystal

•

surface emission

•

continuous-wave operation

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
SCI-SB-RH  
Available on Infoscience
December 9, 2013
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/97787
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés