banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Continuous wave terahertz radiation from an InAs/GaAs quantum-dot photomixer device
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

Experimental setup and (inset) LD pump wavelength ranges with LD temperature variation. ASL—aspheric lenses; BS—beamsplitter cube; and PCA—photoconductive antenna.

Image of FIG. 2.
FIG. 2.

Typical CW THz output power trends from a QD photomixer test device. (a) Monitored as the optical pump power is held constant and the PCA bias and accelerating E-field is increased; (b) as the PCA bias is held constant and the optical pump power is increased.

Image of FIG. 3.
FIG. 3.

Example THz output power trend observed as the structure is optically pumped by a Ti:Sapphire laser, operating at 780 nm with a pulsewidth of 150fs. Initially, the square-law dependence of output power on optical pump power is observed, then the structure begins to exhibit THz output saturation characteristics.

Image of FIG. 4.
FIG. 4.

PL spectrum from the QD-based structure showing the distinct ground state, excited state, and second-excited state PL peaks at around 1256 nm, 1189 nm, and 1111 nm, respectively.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Continuous wave terahertz radiation from an InAs/GaAs quantum-dot photomixer device