Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Terahertz quantum cascade lasers.

Jérôme Faist1, Lassaad Ajili, Giacomo Scalari

  • 1Institute of Physics, University of Neuchâtel, 2000 Neuchâtel, Switzerland. jerome.faist@unine.ch

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|August 13, 2004
PubMed
Summary

Recent advancements in terahertz quantum cascade lasers are reviewed, showcasing devices operating from 66 to 87 micrometers. Optimized waveguide design is crucial for device performance, enabling continuous-wave operation up to 55 K.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Subtherapeutic posaconazole exposure during delayed-release tablet prophylaxis in high-risk patients with haematological malignancies: rationale for routine therapeutic drug monitoring.

The Journal of antimicrobial chemotherapy·2026
Same author

Impact of peri-transplant consolidative radiotherapy in patients with relapsed or refractory classical Hodgkin lymphoma.

Leukemia & lymphoma·2026
Same author

Continuously tunable coherent pulse generation in a semiconductor laser.

Nature·2026
Same author

Who will watch the watchmen: unique challenges of T-cell redirecting therapies in T-cell malignancies.

The Lancet. Haematology·2026
Same author

Gate-Tunable Single Terahertz Meta-Atom Ultrastrong Light-Matter Coupling.

ACS photonics·2026
Same author

T cell and monocyte activation in concert with hematopoietic stem cell interactions shapes the post-allogeneic transplant immune landscape in poor graft function.

Frontiers in immunology·2026

Area of Science:

  • Optoelectronics
  • Semiconductor Devices
  • Quantum Engineering

Background:

  • Terahertz (THz) quantum cascade lasers (QCLs) are crucial for various applications.
  • Developing compact and efficient THz sources remains a significant challenge.
  • Previous designs often faced limitations in performance and operating temperature.

Purpose of the Study:

  • To review recent developments in THz quantum cascade lasers.
  • To demonstrate novel QCL structures with improved performance.
  • To investigate the impact of waveguide design on device operation.

Main Methods:

  • Fabrication and characterization of QCLs with different active regions (three-quantum-well chirped-superlattice and bound-to-continuum).
  • Comparison of waveguide designs, including single interface plasmon and buried contact waveguides.

Related Experiment Videos

  • Evaluation of device performance, such as operating wavelength, output power, and temperature.

    • Main Results:

    • Demonstration of THz QCLs operating at wavelengths from 66 to 87 micrometers.
    • Identification of the critical role of waveguide design in device performance.
    • Achieved continuous-wave (CW) operation up to 55 K with 15 mW output power at 10 K.

    Conclusions:

    • Novel active region designs enable operation in specific THz ranges.
    • Advanced waveguide engineering is essential for optimizing THz QCL performance.
    • The demonstrated devices represent significant progress towards practical THz laser applications.