skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Frequency locking and monitoring based on Bi-directional terahertz radiation of a 3rd-order distributed feedback quantum cascade laser

Journal Article · · Journal of Infrared, Millimeter, and Terahertz Waves
 [1];  [1];  [2];  [3];  [4];  [4];  [5]
  1. Delft Univ. of Technology, Delft (The Netherlands)
  2. SRON Netherlands Institute for Space Research, Utrecht (The Netherlands)
  3. Delft Univ. of Technology, Delft (The Netherlands); SRON Netherlands Institute for Space Research, Utrecht (The Netherlands)
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  5. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

In this study, we have performed frequency locking of a dual, forward reverse emitting third-order distributed feedback quantum cascade laser (QCL) at 3.5 THz. By using both directions of THz emission in combination with two gas cells and two power detectors, we can for the first time perform frequency stabilization, while monitor the frequency locking quality independently. We also characterize how the use of a less sensitive pyroelectric detector can influence the quality of frequency locking, illustrating experimentally that the sensitivity of the detectors is crucial. Using both directions of terahertz (THz) radiation has a particular advantage for the application of a QCL as a local oscillator, where radiation from one side can be used for frequency/phase stabilization, leaving the other side to be fully utilized as a local oscillator to pump a mixer.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1237356
Report Number(s):
SAND-2015-20760J; PII: 210
Journal Information:
Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 36, Issue 12; ISSN 1866-6892
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (23)

Phase locking and spectral linewidth of a two-mode terahertz quantum cascade laser journal July 2006
Hot electron bolometer heterodyne receiver with a 4.7-THz quantum cascade laser as a local oscillator journal January 2013
Beam and phase distributions of a terahertz quantum cascade wire laser journal March 2013
Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell journal January 2012
Frequency and amplitude stabilized terahertz quantum cascade laser as local oscillator journal September 2012
Quantum-limited frequency fluctuations in a terahertz laser journal July 2012
Tuning a terahertz wire laser journal November 2009
Terahertz quantum-cascade lasers journal September 2007
Submegahertz frequency stabilization of a terahertz quantum cascade laser to a molecular absorption line journal February 2010
A new amplifier design for fast low-noise far-infrared detectors using a pyroelectric element journal April 1998
Phase-locking to a free-space terahertz comb for metrological-grade terahertz lasers journal January 2012
Low-divergence single-mode terahertz quantum cascade laser journal September 2009
Phase locking of a 3.4 THz third-order distributed feedback quantum cascade laser using a room-temperature superlattice harmonic mixer journal July 2013
4.7-THz Local Oscillator for the GREAT Heterodyne Spectrometer on SOFIA journal July 2015
Frequency and phase-lock control of a 3?THz quantum cascade laser journal January 2005
Stabilization of optical phase/frequency of a laser system: application to a commercial dye laser with an external stabilizer journal January 1993
Phase locking of a 15 Terahertz quantum cascade laser and use as a local oscillator in a heterodyne HEB receiver journal January 2009
Phase locking of a 27 THz quantum cascade laser to a microwave reference journal January 2009
THz Imaging Radar for Standoff Personnel Screening journal September 2011
Terahertz Superconducting Hot Electron Bolometer Heterodyne Receivers journal June 2007
Low divergence Terahertz photonic-wire laser journal January 2010
Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers journal January 2012
Terahertz Direct Detection Characteristics of a Superconducting NbN Bolometer journal January 2011