PRODUCTS
MESSAGES
Photoelastic modulators
Product description：
Photoelastic modulator is applied for changing the polarization state of light, and make the transmitted light have a dynamic phase retardation. The light-passing part of the device is made of isotropic material, which periodically vibrates at an inherent resonant frequency. The refractive index of the optical material will change periodically due to the photoelastic effect, which changes the phase retardation of the incident light. CASTECH's photoelastic modulator has the advantages of wide receiving angle, large clear aperture, wide wavelength range, high modulation frequency and high precision.
According to the working mode, photoelastic modulators can be divided into two categories: one-dimensional and two-dimensional.
The one-dimensional photoelastic modulator has only one vibration dimension and is applicable for ultraviolet, visible and near-infrared wavebands.
The two-dimensional photoelastic modulator has two vibration dimensions, can achieve a larger range of phase modulation, and is mainly used in visible and infrared wavebands.
Applications：
●Polarization measurement
● Quantum sensing
●Spectrometer
●Astronomical observation
● Magnetometer
Photoelastic principle Phase retardation
Products
-
Photoelastic modulators
- Photoelastic modulator is applied for changing the polarization state of light, and makes the transmitted light have a dynamic phase retardation. CASTECH offers one- and two-dimensional categories.
-
Product description：
Photoelastic modulator is applied for changing the polarization state of light, and make the transmitted light have a dynamic phase retardation. The light-passing part of the device is made of isotropic material, which periodically vibrates at an inherent resonant frequency. The refractive index of the optical material will change periodically due to the photoelastic effect, which changes the phase retardation of the incident light. CASTECH's photoelastic modulator has the advantages of wide receiving angle, large clear aperture, wide wavelength range, high modulation frequency and high precision.
According to the working mode, photoelastic modulators can be divided into two categories: one-dimensional and two-dimensional.
The one-dimensional photoelastic modulator has only one vibration dimension and is applicable for ultraviolet, visible and near-infrared wavebands.
The two-dimensional photoelastic modulator has two vibration dimensions, can achieve a larger range of phase modulation, and is mainly used in visible and infrared wavebands.
Applications：
●Polarization measurement
● Quantum sensing
●Spectrometer
●Astronomical observation
● Magnetometer
Photoelastic principle Phase retardation
|
Model Number：CPEM-f-a-m-t-h |
||||
|
Frequency (f) |
Clear aperture (a) |
Material (m) |
Type (t) |
Housing (h) |
|
50(50kHz) 60(60kHz) 84(84kHz) ... |
13(13mm) 14(14mm) 16(16mm) 22(22mm) ... |
FS (fused silica ) CF (calcium fluoride) ZS (zinc selenide) ... |
1 (One-dimensional) 2 (Two-dimensional) |
A01 A02 A03 A04 ... |
|
Typical Specifications* |
||||
|
Frequency |
Type |
Maximum Clear Aperture |
Transmission |
Acceptance Angle |
|
50kHz |
One-dimensional |
16mm |
≥98% |
20° |
|
60kHz |
One-dimensional |
13mm |
≥98% |
20° |
|
50kHz |
Two-dimensional |
22mm |
≥98% |
20° |
|
60kHz |
Two-dimensional |
13mm |
≥98% |
20° |
*Wavelengths range 532-1100nm
Housing dimensions(mm)：
A01 A02
Enquiry
E-mail
