Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Investigations on the generation of light with sub-shot intensity noise with quantum cascade lasers

[+] Author Affiliations
Tobias Gensty, Jens von Staden, Wolfgang E. Elsaesser

Technische Univ. Darmstadt (Germany)

Proc. SPIE 5468, Fluctuations and Noise in Photonics and Quantum Optics II, 191 (May 25, 2004); doi:10.1117/12.546953
Text Size: A A A
From Conference Volume 5468

  • Fluctuations and Noise in Photonics and Quantum Optics II
  • Peter Heszler
  • Maspalomas, Gran Canaria Island, Spain | May 25, 2004

abstract

We present results of comprehensive investigations of the intensity noise of continuous wave (CW) operated quantum cascade lasers (QCLs) under various operation conditions. These experiments are performed with the aim to measure and understand the intensity noise of QCLs, and furthermore to explore the potential to generate non-classical light, i.e. squeezed states of light with sub-shot intensity noise with these new devices. First, we measure the relative intensity noise (RIN) and find that the relative intensity noise behaviour of QCLs is different from that of bipolar edge emitting lasers and Vertical-Cavity Surface-Emitting Laser (VCSELs). These observations are explained by a semi-classical noise description in which the particular level scheme of the QCLs is incorporated via an effective cascaded three-level model. Second, we compare this intensity noise with respect to the shot-noise level in order to explore the possibility of generation of squeezed states of light in the mid-infrared spectral domain with QCLs. In our first experiments we find only an intensity noise 2 dB above the shot noise level. Finally, these experimental results, the possible origin of the observed non-successful sub-shot noise generation, as well as possibilities for future trends, applications and the limitations of these non-classical states of light with respect to sensing and spectroscopic applications are discussed.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Tobias Gensty ; Jens von Staden and Wolfgang E. Elsaesser
"Investigations on the generation of light with sub-shot intensity noise with quantum cascade lasers", Proc. SPIE 5468, Fluctuations and Noise in Photonics and Quantum Optics II, 191 (May 25, 2004); doi:10.1117/12.546953; http://dx.doi.org/10.1117/12.546953


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement

 

 

  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.