The module integrates directly into your current system, using a rotating magnetic field to convert the continuous beam into controllable pulses. Switching from normal to pulse mode takes minutes. Without the need to replace your TEM or invest in an amplified femtosecond laser for pulse generation, your setup gets full control over pulse structure with previously unobtainable flexibility.

The Clocx Module consists of a modulator, an interchangeable chopping aperture, a demodulator, and a control cabinet. The module is placed between the electron gun and the condenser system of your TEM. The modulator uses a rotating magnetic field at GHz frequencies to displace the continuous beam onto a circular pattern. Time maps linearly onto the circle: each position on the circumference corresponds to a specific moment in the RF cycle, like a clock. A chopping aperture placed between modulator and demodulator selects which portions of the beam pass through. The demodulator, rotating with half period phase delay, returns the selected pulses to a straight line on the original optical axis.

The parallel displacement by the (de)modulator preserves beam angle, minimizing growth in emittance and energy spread. Peak brightness is conserved, leaving spatial resolution in pulsed mode unchanged from continuous operation. By swapping apertures with different hole patterns, you configure the pulse structure to your needs: single pulses at 2.45 GHz, higher harmonics up to THz rates, low-frequency modes from 1 to 80 MHz, or fully custom temporal profiles. A microwave synchronization output connects to your pump laser for pump-probe experiments. The module ships complete: modulator and demodulator inserts, aperture set, control cabinet with RF driver, chillers, and control software.