THz Time-Domain Spectrometer Works With FS Lasers

MKS Instruments unveils the Newport Terahertz Time-Domain Spectrometer (THz-TDS).  Designed for the scientific research market, the device is the first commercially available turn-key terahertz time-domain spectrometer designed to work with amplified, femtosecond laser sources.  It can be used to study carrier dynamics in semiconductors on a very short time scale.


The spectrometer generates terahertz radiation using two-color laser induced plasma, which then passes through the sample of interest, before being electro-optically detected by a timed gate pulse in a zinc telluride crystal, with a quarter-wave plate and Wollaston prism for dividing the S- an P- components prior to the balanced detector.  The THz-TDS is typically pumped with an external Optical Parametric Amplifier (OPA) to excite the samples in the ultraviolet to mid-infrared radiation range, allowing for THz spectroscopy of the excited state of the sample. 

Free Newsletter

Like this article? Subscribe to FierceSensors!

The sensors industry is constantly changing as innovation runs the market’s trends. FierceSensors subscribers rely on our suite of newsletters as their must-read source for the latest news, developments and analysis impacting their world. Register today to get sensors news and updates delivered right to your inbox.


The optical pump-THz probe delay range is 4.3 ns standard.  The Newport THz-TDS detection range is 0.25-3.0 THz capable of THz resolution of 1.25 GHz, with upgrade options to increase the range and resolution. For more info, peruse the datasheet.

Suggested Articles

Google CEO Sundar Pichai said EU's GDPR could be starting point for AI regulation, but urged countries to cooperate for a standard approach.

Apple's Lighting cable may be phased out, according to an article on the BBC site.

IP theft and technology transfer are key components of eight-part deal