EOM Electro-Optic Modulator
Manipulating the Intensity of Laser Beams
Controlling Light by EOM – Electro-Optic Modulator
At a Glance
APEs external Electro-optic Modulator (EOM) is an accessory for laser sources based on APEs long standing experience in designing optoelectronics. It is a dedicated modulator that was designed to be used in Stimulated Raman Scattering (SRS) and other applications that require an amplitude modulated signal. The external EOM can be used with most CW or mode-locked lasers, or synchronously pumped OPOs in the VIS to NIR range (as for example the Levante Emerald or the 1031 nm output of the Emerald Engine). It modulates the amplitude of the beam with a fixed frequency of either 10 MHz or 20 MHz. Modulators for different wavelengths between 420 nm and 1600 nm are available as well.
The EOM combines an electro-optical crystal with a polarizer in a single housing and can be easily mounted onto the optical table. The modulator is connected to the computer through a USB interface and power and phase can be easily remote controlled through the Windows-based Control Software. For easy synchronization the modulator can be connected to the pump laser sync output (typically a signal from a fast photo diode). Alternatively, the frequency can be generated internally.
EOM Package
Amplitude modulation for 1064 nm or 1031 nm laser beams
Other wavelengths available
10 MHz or 20 MHz fixed modulation frequency (can be phase locked, synchronized to laser frequency: f / 4 or f / 8)
Resonant design for reduced RF radiation
Ideal tool for SRS imaging applications
EOMs Optimized for the Following Wavelength Ranges
420 … 600 nm
690 … 900 nm
900 … 1200 nm
1030 … 1064 nm
1200 … 1600 nm
Specifications
EOM Specifications * If modulation sync to laser is required EOM 420
EOM 690
EOM 900
EOM 1030
EOM 1200
Wavelength Ranges
420 ... 600 nm
690 ... 900 nm
900 ... 1200 nm
1030 ... 1064 nm
1200 ... 1600 nm
Modulator Frequency
Either 10 MHz or 20 MHz fixed modulation frequency. (Must be specified at time of order. Frequency can be phase locked to laser frequency: f/4 or f/8)
Either 10 MHz or 20 MHz fixed modulation frequency. (Must be specified at time of order. Frequency can be phase locked to laser frequency: f/4 or f/8)
Either 10 MHz or 20 MHz fixed modulation frequency. (Must be specified at time of order. Frequency can be phase locked to laser frequency: f/4 or f/8)
Either 10 MHz or 20 MHz fixed modulation frequency. (Must be specified at time of order. Frequency can be phase locked to laser frequency: f/4 or f/8)
Either 10 MHz or 20 MHz fixed modulation frequency. (Must be specified at time of order. Frequency can be phase locked to laser frequency: f/4 or f/8)
Laser Frequency *
76 ... 84 MHz (± 0.5 MHz)
76 ... 84 MHz (± 0.5 MHz)
76 ... 84 MHz (± 0.5 MHz)
76 ... 84 MHz (± 0.5 MHz)
76 ... 84 MHz (± 0.5 MHz)
Damage Threshold Modulator
2 W / mm^2 @ 532 nm
2 W / mm^2 @ 532 nm
2 W / mm^2 @ 532 nm
2 W / mm^2 @ 532 nm
2 W / mm^2 @ 532 nm
4 W / mm^2 @ 1064 nm
4 W / mm^2 @ 1064 nm
4 W / mm^2 @ 1064 nm
4 W / mm^2 @ 1064 nm
4 W / mm^2 @ 1064 nm
Modulation Depth
> 85 % (after initial warm up)
> 85 % (after initial warm up)
> 85 % (after initial warm up)
> 85 % (after initial warm up)
> 85 % (after initial warm up)
商品属性 [操作波长] 420-1600nm