Room temperature quantum cascade laser with ∼31% wall-plug efficiency

Abstract

In this article, we report the demonstration of a quantum cascade laser emitting at λ ≈ 4.9 μm with a wall-plug efficiency of ∼31% and an output power of ∼23 W in pulsed operation at room temperature with 50 cascade stages (Ns). With proper fabrication and packaging, this buried ridge quantum cascade laser with a cavity length of 5 mm delivers more than ∼15 W output power, and its wall-plug efficiency exceeds ∼20% at 100 °C. The experimental results of the lasers are well in agreement with the numerical predictions.

Document Details

Document Type
Pub Defense Publication
Publication Date
Jul 01, 2020
Source ID
10.1063/5.0012925

Entities

People

  • Donghai Wu
  • F. Wang
  • Manijeh Razeghi
  • S. Slivken

Organizations

  • Northwestern University
  • Office of Naval Research Global

Tags

Fields of Study

  • Materials science

Readers

  • Aerodynamics.
  • Energy Conservation and Renewable Energy Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Directed Energy
  • Quantum Computing