cw Terahertz Generation – Spectroscopy Kit

Spectroscopy Kit for TOPTICA’s cw terahertz package: Fiber-pigtailed photomixers.

Leading-edge photomixer technology
Typ. 1800 GHz bandwidth
Terahertz power approx. 0.5 µW @ 300 GHz
SNR ~ 80 dB @ 100 GHz, 50 dB @ 1000 GHz
Fully packaged GaAs photomixers with SM fiber pigtail
Low temperature compatible version upon request
Requires Standard Package
Can be used with High Power Extension (recommended)
Highest resolution (1 MHz) with High Precision Extension

The cw spectroscopy kit comprises state-of-the-art photomixers, providing a high bandwidth, attractive terahertz power levels, and excellent signal-to-noise ratios. The single-mode fiber pigtail alleviates the need for cumbersome beam alignment. The package is complemented by TOPTICA's proprietary TeraControl unit TC 110, a compact, digital lock-in amplifier module. A LabView software package is supplied as part of the delivery.

Technical Information

Specifications:
Wavelength range	853 + 855 nm 1550 nm (coming up, Q 03 / 2010)
Terahertz scan range	50 – 1800 GHz
Terahertz power	Typ. 0.5 µW @ 300 GHz*
Terahertz SNR	80 dB @ 100 GHz 50 dB @ 1000 GHz
Photomixer package	Cylindrical, Ø 1”, Integrated Si lens and SM fiber pigtail
Lock-in amplifier	TeraControl TC 110 (included)
Transimpedance amplifier	PDA-S (included)
Frequency control	External PC, USB interface
Software	LabView sample program included (compiled version + open source)
Terahertz optomechanics	U.r. (Extended Version)
Motorized delay stage	U.r. (Extended Version)

* With High Power Extension.

Schematic setup of TOPTICA’s cw Terahertz Spectroscopy Kit, in basic and extended version.

cw Terahertz Spectroscopy Kit: Basic version (blue) and extended version (yellow).

Dynamic range of TOPTICA’s cw terahertz system, using the cw Spectroscopy Kit.

System dynamic range for terahertz frequencies of 50 – 2000 GHz. The dips are absorption lines of water vapor.

Fiber-pigtailed photomixers, as used in TOPTICA’s cw Terahertz Spectroscopy Kit.

Photomixers with broadband spiral antenna, Silicon lens, and single-mode fiber pigtail.

TeraControl TC110, digital lock-in module as used in TOPTICA’s cw Terahertz Spectroscopy Kit.

TeraControl TC 110: Digital lock-in for bias modulation and photocurrent detection.

Options & Related Products

Options

Extended version: Xyz stages for photomixers, collimating mirrors, optical rails, motorized delay stage (upon request)
Resonant antennae (upon request)
1550 nm, InP based modules: Available from Q 03 / 2010

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