Journals Articles Conferences News About CLP
Submit a paper Email Alert
Search
Search
Articles
Journals
News
Advanced Search
Top Searches
2D MaterialsTransformation opticsQuantum PhotonicsSmall lasersSemiconductor UV PhotonicsSupersymmetric microring laser arrays

Acta Optica Sinica, Volume. 40, Issue 11, 1114003(2020)

Self-Mixing Interferometry with Terahertz Quantum Cascade Lasers

Zhaolong Xu1, Yan Xie2、*, Yingxin Wang2, Ziran Zhao2, Weidong Chu3、**, and Dejun Feng1、***
Author Affiliations
  • 1School of Information Science and Engineering, Shandong University, Qingdao, Shandong 266237, China
  • 2Department of Engineering Physics, Tsinghua University, Beijing 100084, China
  • 3Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
    • show less
    AbstractGet PDF(in Chinese)
    Figures&Tables (8)
    Equations (0)
    References (21)
    Cited By (6)
    Tools
    Paper Information
    Topics
    Figures & Tables(8)
    Schematic of self-mixing interference F-P cavity model

    Fig. 1. Schematic of self-mixing interference F-P cavity model

    Download full size
    Schematic of THz-QCL self-mixing interference spectral analysis system

    Fig. 2. Schematic of THz-QCL self-mixing interference spectral analysis system

    Download full size
    Self-mixing signal and spectrum of THz-QCL when I=0.645 A. (a) Self-mixing signal; (b) spectrogram

    Fig. 3. Self-mixing signal and spectrum of THz-QCL when I=0.645 A. (a) Self-mixing signal; (b) spectrogram

    Download full size
    Measured laser spectra under different ΔLtotal when I=0.645 A

    Fig. 4. Measured laser spectra under different ΔLtotal when I=0.645 A

    Download full size
    Laser spectra under different driving currents

    Fig. 5. Laser spectra under different driving currents

    Download full size
    Self-mixing signal and spectrum of terminal voltage of THz-QCL when I=0.7 A. (a) Self-mixing signal; (b) spectrogram

    Fig. 6. Self-mixing signal and spectrum of terminal voltage of THz-QCL when I=0.7 A. (a) Self-mixing signal; (b) spectrogram

    Download full size
    Comparison of self-mixing interference signals with theoretical simulations under different currents. (a) I=0.623 A; (b) I=0.645 A; (c) I=0.655 A

    Fig. 7. Comparison of self-mixing interference signals with theoretical simulations under different currents. (a) I=0.623 A; (b) I=0.645 A; (c) I=0.655 A

    Download full size

    • Table 1. Calculated results of feedback optical coupling coefficients and linewidth enhancement factors under different driving currents

      View table

      Table 1. Calculated results of feedback optical coupling coefficients and linewidth enhancement factors under different driving currents

      I/ACα
      0.6230.0020±0.0005-0.092±0.001
      0.6450.5992±0.0194-0.198±0.045
      0.6550.6195±0.0180-0.702±0.050
    Tools

    Get Citation

    Copy Citation Text

    Zhaolong Xu, Yan Xie, Yingxin Wang, Ziran Zhao, Weidong Chu, Dejun Feng. Self-Mixing Interferometry with Terahertz Quantum Cascade Lasers[J]. Acta Optica Sinica, 2020, 40(11): 1114003

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Set citation alerts for article
    Save article for my favorites
    Paper Information

    Category: Lasers and Laser Optics

    Received: Feb. 1, 2020

    Accepted: Mar. 16, 2020

    Published Online: Jun. 10, 2020

    The Author Email: Yan Xie (xie_yan@mail.tsinghua.edu.cn), Weidong Chu (chu_weidong@iapcm.ac.cn), Dejun Feng (dejunfeng@sdu.edu.cn)

    DOI:10.3788/AOS202040.1114003

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology