Development of a rapid-scan fiber-integrated terahertz spectrometer

Download

index.pdf

Date

2014-04-01

Author

Keskin, Hakan
Altan, Hakan
Yavas, Seydi
İLDAY, Fatih Ömer
Eken, Koray
ŞAHİN, ASAF BEHZAT

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

193
views

0
downloads

Scientists in terahertz (THz) wave technologies have benefited from the recent developments in ultrafast laser technologies and RF technologies and applied these new gained techniques into characterizing a wide variety of phenomena. Undoubtedly, the most successful of these applications has been in the development of time-domain terahertz spectroscopic and imaging systems which has been utilized in the characterization of dielectrics and semiconductors. This pulsed technique has allowed users to characterize dynamical behavior inside materials under illumination with picosecond resolution. Typically pump/probe or similar dynamical measurements require the use of amplified pulses derived from free-space solid state lasers in the J-mJ range and since interferometric techniques are typically used in pulsed measurements the measurement time of a THz spectrum can last at least tens of minutes. Better systems can be realized based on fiber laser technologies. Here we discuss the advantages of a THz spectrometer driven by an ultrafast Ytterbium doped fiber laser whose repetition rate can be tuned rapidly allowing for rapid dynamical measurements. The efficient gain medium, robust operation and compact design of the system opens up the possibility of exploring rapid detection of various materials as well as studying dynamical behavior using the high brightness source.

Subject Keywords

THz, TDS, TRTS, Fiber laser, Rapid scan

URI

https://hdl.handle.net/11511/47803

Journal

OPTICAL AND QUANTUM ELECTRONICS

DOI

https://doi.org/10.1007/s11082-013-9794-x

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

DEVELOPMENT AND EVALUATION OF LASER PROCESSED LIGHT MANAGEMENT INTERFACES FOR GRAPHENE/SILICON SCHOTTKY SOLAR CELLS Avishan, Nardin; Bek, Alpan; Ünalan, Hüsnü Emrah; Department of Micro and Nanotechnology (2022-12-20) Graphene/silicon Schottky solar cells are one of the extensively studied topics during the last decade due to the high conductivity, high transparency, and mechanical flexibility properties of graphene. One of the most efficient and long-lasting methods used for performance enhancement for graphene/silicon Schottky solar cells is silicon surface texturing. It significantly increases the light absorption of silicon by controlling the incoming light through multiple interactions which is called light trapping...
IMPLEMENTATION OF STRONG LIGHT-MATTER INTERACTION FOR FABRICATION AND LIGHT MANAGEMENT OF THIN CRYSTAL SILICON SOLAR CELLS Zolfaghari Borra, Mona; Bek, Alpan; Ünalan, Hüsnü Emrah; Department of Micro and Nanotechnology (2021-7-29) The integration of photonic components with electrical elements on the same silicon chip may lead to the development of new technologies. One limitation is the space available on the wafer surface, which is restricted. Currently, conventional fabrication techniques produce devices only on the top thin layer of the wafer surface. As a result, new architectural designs are required. Producing functional components deep inside Si without creating damage to the surfaces is a potential technique for overcoming t...
Development of a pulsed fiber laser for ladar system Dülgergil, Ebru; Altan, Hakan; Department of Physics (2012) In recent years laser technology has increasingly developed with the use of fiber lasers and this has provided the possibility to implement different techniques in the defense industry. LADAR is at the forefront of these techniques. Fiber lasers constitute a perfect source for LADAR systems due to their excellent robustness, compact size and high-power generation capability. In this study we will explore the development of a pulsed fiber laser source for a LADAR system that can obtain high resolution 3D ima...
Development of a picosecond pulsed mode-locked fiber laser Yağcı, Mahmut Emre; Altan, Hakan; Department of Physics (2013) Fiber lasers represent the state-of-the-art in laser technology and hold great promise for a wide range of applications because they have a minimum of exposed optical interfaces, very high efficiency, and are capable of exceptional beam quality. In the near future, the most important markets such as micromachining, automotive, biomedical and military applications will begin to use this technology. The scope of this thesis is to design and develop a short picosecond pulsed fiber laser using rare-earth doped ...
3d-microstructuring of silicon induced by nanosecond pulsed infrared fiber laser for potential solar cell applications BÜLBÜL TATBUL, BESNA; Pavlov, Ihor; Department of Physics (2022-9-02) Laser-induced three-dimensional (3D) structuring of silicon is a highly desired technology as silicon drives the semiconductor industry with its wide range of applications in solar cells, telecommunications, microelectronics, integrated photonics, etc. Structuring of silicon for such applications is typically performed by lithographic pattern production and pattern transfer via plasma etching, reactive ion etching, or chemical etching. However, conventional lithography methods are limited to the surface of ...

Citation Formats

H. Keskin, H. Altan, S. Yavas, F. Ö. İLDAY, K. Eken, and A. B. ŞAHİN, “Development of a rapid-scan fiber-integrated terahertz spectrometer,” OPTICAL AND QUANTUM ELECTRONICS, pp. 495–503, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47803.