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Triglycine Sulfate[(NH2CH2-COOH)3H2SO4 ] crystal has good
pyroelectric property. It exhibits strong absorbing
ability in the most part of infrared region. At room temperature, its pyroelectric coefficient value is the highest.
This crystal is suitable to make speed broad band infrared pyroelectric detectors and
vidicon. Also, it is a proper material for CO2 (Carbon Dioxide) laser
(10.6µm) and hydrogen cyanide laser (337µm).
Deuterated Triglycine(DTGS) crystal has a Curie temperature which can be raised to
57-62 °C. Thus, the temperature ranges of the devices made of it can also be raised. L-alanine doped deuterated
triglycine sulfate (DATGS ) crystal creates inherent bias field due to the doping, preventing the crystal
from depolarization, and the pyroelectric property is greatly raised.
DATGSP and DATGSAs are phyophoric acid and arsenic acid doped DATGS(Lalanine doped
deuterated triglycine sulfate) crystals respectively. The pyroelectric coefficients of these two crystals are
evidently raised.
Properties:
| |
TSG |
DTGS |
DATGSP |
DATGSAs |
| Pyroelectric coefficient (c/cm2 K ) |
3×10-8 |
--- |
4.2×10-8 |
|
Dielectric constant
(1KHz ) |
22-32 |
--- |
30 |
|
| Curie temperature |
49°C |
57-62°C |
58-62°C |
|
| Coercive electric field |
--- |
Ee = 165V/cm |
--- |
|
| Inherent bias field |
Ebias = 664V/cm |
2KV/cm |
2~3KV/cm |
|
| Dielectric loss tand |
~10-4 |
--- |
--- |
|
Main Specifications:
| Dimension tolerance |
+ 0.05 mm |
| Angle tolerance |
10' |
| Scratch/dig |
10/5 |
| Flatness |
λ/4 @
633nm |
| Parallelism |
<10" |
| Perpendicularity |
<10' |
| Clear aperture |
90% |
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