3D printed GSU logo by our two-photon polymerization system
Our direct laser writing system
Two-photon polymerization system under test
The distance between neighboring makers is 200 micrometers.
Ultra-fast laser pulse picker based on FPGA.
We provide an economical solution for synchronized ultra-fast laser pulse picker for pump-probe experiments. By encoding Cyclone FPGA, we are able to decrease the repetition rate to arbitrarily low frequency from the original 76 MHz out of our Mira 900 system. Currently, we can witch among 7.6 MHz, 760 KHz, 76 KHz, 7.6 KHz, 760 Hz, and 76 Hz, by simply press the bottom, without losing the phase locking. The shortest switching pulse duration generated by the design is as low as 7 ns, which is approaching the global clock limit of the PLL in FPGA., and the switching pulse directly drives AOM for laser switching. Additional functions including delay, RS232 control, laser mode-locking monitoring, etc.
New cryostat sample holder is ready.
The upgrading provides us much better thermal contact and on-board temperature sensor. Thus lower temperatures can be reached with more precise control.
The parts were fabricated by Sam Mayberry in our Instrument Shop.
Narrow, but still connected channel.
DIY in the Studio.
DIY, saves money and time! We can do everything here, in the lab, science, and art. So we call it a studio.
Automatic welding setup, welded parts before and after electrochemical polishing.
This is the benefit of a home-built instrument! You can do anything to it, even make good luck permanent. 🙂
The internal parts of the probe station.
The internal structure of the probe station.
The radiation shielding layer.
The bottom piece. I drove the machine shop technicians crazy by this piece. ;). I was asked if this was inspired by “Burger King”.
The design, fabrication, assembling of the probe station.
3D CAD model of the probe station
Some parts arrived, and were waiting for assembling.
Peter from the department instrument shop is helping us to install the cold head. Thanks, Peter, Sam and Dwayne from the shop for giving us solid support.
The final masterpiece!
This was what happened in the periods of 2018~2019.
This is the logo of our Studio. 🙂