Newport Introduces THz Pulse Generation Kit

Laser and photonic solutions provider Newport has introduced the terahertz (THz) pulse generation kit using a sub-35-fs Ti:sapphire amplifier system for demanding applications. The kit can be easily integrated with a Ti:sapphire amplifier to generate terahertz pulses, which can be further used for linear, nonlinear, and time-resolved spectroscopy applications. The THz pulse generation kit utilises standard Newport optics, opto-mechanics, manual stages, and Conex-based motorised solutions to provide high performance and accuracy.

The 800nm Ti:sapphire laser pulse (1kHz, ~300uJ per pulse) is focused into ambient air to generate the air plasma, which produces THz pulses. With this design, the damage threshold is not a concern as the air replenishes itself from pulse to pulse. The generated THz pulse has the oscillation that spans about 1ps and has the estimated pulse energy of 0.1-0.3nJ per pulse. Furthermore, the ability to recover the phase and the amplitude information of the THz field through electro-optic sampling enables the kit to function as a THz spectrometer, without further modification.

Keshav Kumar, product marketing manager - optics and technology and applications center products at Newport, said: 'The air plasma-based THz pulse generation kit can be easily integrated with amplifier-based systems to generate high-energy terahertz pulses for several demanding applications. 'These include characterisation of nanomaterials, detecting security-sensitive explosives, biomolecular spectroscopy, and telecommunication applications.

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