- based on Conoptics pockels cell EOM modulation
Abstract: To achieve high-frequency electro-optic modulation, consider the use of the transverse Pockels effect ( EOM, Pockels cells, Pockels cells, Conoptics pockels cell EOM), the horizontal Pocker produced by Conoptics Inc. (Shanghai Haoquan Optoelectronics Domestic Agent) The half-wave voltage of the effect decreases as the length of the crystal increases, so it can be used by the US Conoptics Company (Shanghai Quantitative Photoelectric Domestic Agent) Pockel Box (Low Pressure Pocker Box, EOM, Pockels Box, Pockels) Cells, Conoptics pockels cell EOM) The half-wave voltage is reduced to about one hundred volts, and the high-frequency amplifier power supply produced by Conoptics Inc. (Shanghai Haoliang Optoelectronics Domestic Agent) is used to form a low-voltage high-frequency electro - optic modulator.
Principle introduction:
In electro-optical modulation (EOM), Pockels cells made by the Pockel effect are commonly used devices for electro-optic modulation (EOM).
The Pockel effect, also known as the Pockels effect, the Pockels effect, the Pockels effect, and the pockels effect, refer to the specific crystal refractive index and the applied electric field strength. A certain proportion of the photoelectric phenomenon.
By controlling the applied electric field, the refractive index in a certain direction is changed, so that the electro-optic modulator Pockels cell (EOM, Pockels cells, Popels cells, Conoptics pockels cell EOM) can work as a variable half-wave plate. Thereby achieving a change in polarization state. When the electro-optic modulator Pockels cell (EOM, Pockels cells, Pockels cells) is placed between two vertical polarizers, light emphasizing can be achieved.
According to the different direction of voltage pressurization, the Pockel effect can be divided into the longitudinal Pockel effect and the transverse Pockel effect.
When the voltage pressurization direction is parallel and the light propagation direction is called the longitudinal Pockels effect ((EOM, Pockels cells, Cooptics cells, Conoptics pockels cell EOM));
When the voltage pressurization direction is perpendicular to the light propagation direction, it is called the transverse Pockels effect ((EOM, Pockels cells, Coopels cells, Conoptics pockels cell EOM).
When the Pockels box is the longitudinal Pockel effect (EOM, Pockels cells, Conoptics pockels cell EOM), the half-wave voltage of the Pockels cell is independent of the crystal length, so the Pockels box half-wave The voltage is generally up to several thousand volts, and can provide a power supply of thousands of volts, generally lower frequency (Khz-Mhz), so high-frequency electro-optic modulation cannot be achieved.
To achieve high-frequency electro-optic modulation, consider the use of the transverse Pockels effect (EOM, Pockels cells, Pockels cells, Conoptics pockels cell EOM), the horizontal Pocker produced by Conoptics, Inc. The half-wave voltage of the effect decreases as the length of the crystal increases, so it can be used by the US Conoptics Company (Shanghai Quantitative Photoelectric Domestic Agent) Pockel Box (Low Pressure Pocker Box, EOM, Pockels Box, Pockels) Cells, Conoptics pockels cell EOM) The half-wave voltage is reduced to about one hundred volts. It is equipped with a high-frequency amplifier power supply produced by Conoptics Inc. (Shanghai Haoliang Optoelectronics Domestic Agent) to form a low-voltage high-frequency electro-optic modulator.
For the high-voltage output of the electrical part, the frequency of the AC-coupled signal modulator including the switching modulation can be ultra-high-frequency modulation, and the fastest Pecker box (EOM, Pockels box, Pockels cells, Conoptics pockels cell EOM) modulation frequency up to 800Mhz.
For general arbitrary analog signals, because high-voltage linear amplification is more difficult and the process is more complicated, the upper limit frequency is lower than the AC-coupled signal, but it can still be supplied to the 100Mhz electro-optic modulator Pockels box (low-pressure Pockels box, EOM). , Pockels cells, Pockels cells, Conoptics pockels cell EOM) products.
If you are interested in the above high frequency electro-optic modulator (800Mhz Pockels) - you can find out more on our official website.
Electro-optic modulator product information, or call us directly at 021-34221962.
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