Dynamical control of optical properties by using a terahertz dressed state

Hideki Hirori

doi:10.1117/12.2248955

Abstract

Excitons are strongly correlated pairs of electrons and holes and dominate the absorption spectrum of semiconductors near the bandgap energy. The intraexcitonic transition energy lies in the terahertz (THz) frequency range with large dipole moments, making exictons useful systems not only for studying the fundamentals of nonlinear optics but also for exploiting THz excitonic interactions in optical communication devices. However, so far, the study of the effect of excitonic dressed states on the optical field has been limited because of the usage of a single optical frequency as a probe. The strong electric field with a stable phase that is associated with optical pulses may make it possible to investigate the role of the dressed state. Here, we probe the transient absorption changes of a near-infrared (NIR) pulse in a GaAs quantum well in the presence of a multi-cycle THz wave. By changing the delay between the NIR probe and the THz wave, the absorption strengths can be modulated on a sub-cycle THz timescale, and the frequency analysis shows the formation of THz-induced dressed states of excitons.

Citation Download Citation

Hideki Hirori, Hideki Hirori, } "Dynamical control of optical properties by using a terahertz dressed state", Proc. SPIE 10102, Ultrafast Phenomena and Nanophotonics XXI, 1010207 (23 February 2017); doi: 10.1117/12.2248955; https://doi.org/10.1117/12.2248955

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years