THz detectors: Golay cell and LiTaO3 piroelectric detectors

Pyroelectric detector request a quote
Operating spectral range: 0.1 – 3.0 THz (with filter), 0.02 - 20 THz (without filter)
Responsivity: 1000 V/W
Noise level: 1 mV

Golay Cell (with a polyethylene window) - request a quote
Opto-acoustic THz detector mounted on a vibration-isolating base.
Operating spectral range: 0.02-20 THz
Responsivity: 5000 V/W
Noise Level: 1 mV
 

Golay Cell (with a diamond window) - request a quote
Opto-acoustic THz detector mounted on a vibration-isolating base.
Operating spectral range: 20 GHz to visible light
Responsivity: 5000 V/W
Noise Level: 1 mV

Golay Cell Power supply - request a quote
The power supply provides for –15V, +15V and 32 mA electrical outputs required for Golay Cell
operation

A Golay Cell, or Golay Detector is a type of detector mainly used for infrared and terahertz spectroscopy. It consists of a small metal cylinder which is closed by a blackened metal plate at one end and by a flexible metalized diaphragm at the other. The cylinder is filled with xenon and then sealed. When IR or THz radiation is allowed to fall on the blackened metal plate, it heats the gas which causes it to expand. The resulting increase in pressure deforms the diaphragm separating the two chambers. Light from a lamp is made to fall on the diaphragm which reflects the light to a photocell. Motion of the diaphragm changes the output of the cell [1]. Its main advantage is that its useful wavelength range is very wide. The response is mainly linear over the entire working range. It also has a quite good response time of the order of 10ms.

References

1. Golay M J E 1947 Rev. Sci. Insfrum. 18 347
 

Teraherts products from Del Mar Photonics

Pacifica THz Time Domain Spectrometer

Generation of 10 µJ ultrashort terahertz pulses by optical rectification using
Wedge TiSapphire Multipass Amplifier

Crystals for THz generation:
Gallium Phosphor GaP 110-cut crystals for THz applications
GaSe is used as infrared nonlinear crystal and for THz applications GaSe crystal, Z-cut, 10x10x1 mm
ZnTe crystals for THz generation  ZnTe crystal, 10x10x0.5 mm, 110-cut 

Photoconductive Antenna for terahertz waves
iPCA - interdigital Photoconductive Antenna for terahertz waves

THz detectors: Golay cell and LiTaO3 piroelectric detectors

Del Mar Photonics, Inc. 4119 Twilight Ridge San Diego, CA 92130 tel: (858) 876-3133 fax: (858) 630-2376 Skype: delmarphotonics sales@dmphotonics.com