Demonstration of a GaAs-based 1550-nm continuous wave photomixer
- Terahertz Sensor Laboratory, Departments of Physics and Electrical Engineering, Wright State University, Dayton, Ohio 45435 (United States)
- Mound Laser and Photonics Center, Inc., Kettering, Ohio 45420 (United States)
An Er:GaAs-based 1550-nm CW photomixer is demonstrated. The related mechanism is extrinsic photoconductivity with optical absorption between the localized deep levels created by the Er and the extended states above the conduction band edge of GaAs. With the power boost made possible by a fiber-coupled erbium-doped-fiber amplifier, the Er:GaAs photomixers, operating at 1550 nm, radiate THz power levels easily measured by a Golay cell, and display a power spectrum having a −3 dB roll-off frequency of 307 GHz. This corresponds to a photocarrier lifetime of 520 fs, in good agreement with a previous measurement of the bandwidth of the same material in a photoconductive switch.
- OSTI ID:
- 22399087
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
Similar Records
High power terahertz generation using 1550 nm plasmonic photomixers
Frequency-tunable continuous-wave terahertz sources based on GaAs plasmonic photomixers
Transfer standard for the spectral density of relative intensity noise of optical fiber sources near 1550 nm
Journal Article
·
Mon Jul 07 00:00:00 EDT 2014
· Applied Physics Letters
·
OSTI ID:22399087
+3 more
Frequency-tunable continuous-wave terahertz sources based on GaAs plasmonic photomixers
Journal Article
·
Mon Sep 28 00:00:00 EDT 2015
· Applied Physics Letters
·
OSTI ID:22399087
Transfer standard for the spectral density of relative intensity noise of optical fiber sources near 1550 nm
Journal Article
·
Fri Jun 01 00:00:00 EDT 2001
· Journal of the Optical Society of America B
·
OSTI ID:22399087