BROWSE
Detail
Journal Article
Rapidly Frequency-Swept Optical Beat Source for Continuous Wave Terahertz Generation
- Authors
- Min Yong Jeon, Namje Kim, Sang-Pil Han, Hyunsung Ko, Han-Cheol Ryu, Dae-Su Yee, Kyung Hyun Park
- Issue Date
- 2011-09
- Citation
- Optics Express, v.19, no.19, pp.18364-18371
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- We propose a rapidly frequency-swept optical beat source for continuous wave (CW) THz generation using a wavelength swept laser and a fixed distributed feedback (DFB) laser. The range of the sweeping bandwidth is about 17.3 nm (2.16 THz), 1541.42-1558.72 nm. The achieved side mode suppression ratio for both wavelengths within the full sweeping range is more than 45 dB. We observe CW THz signals for tunable optical beat sources using a fiber coupled CW THz measurement system to confirm the feasibility of using our frequency swept optical beat source as a CW THz radiation source. The THz output signal falls to the thermal noise level of the low-temperature grown (LTG) InGaAs photomixer beyond 1.0 THz. The rapidly frequency-swept optical beat source will be useful for generating high-speed tunable CW THz radiation. © 2011 Optical Society of America.
- KSP Keywords
- Continuous-wave terahertz, Distributed feedback (DFB) laser, Fiber-coupled, High Speed, Optical beat source, THz generation, THz measurement, THz radiation, THz signals, Terahertz generation, Thermal noise
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
