Lasers, TVs: check my previous answer.
If you want to know more about scientific success in USSR, please find yourself a course on history and philosophy of science / informatics. Soviet scientists did a lot contributions to the scientific community, including in such areas like chemistry, cybernetics, neurophysiology, psychology among others, just like any other big country in the world.
I was particularly interested in the history of sound synthesis in the 1930s, which I personally find fascinating (Evgeny Scholpo, Arseny Avraamov, Boris Yankovsky). They basically implemented spectral resynthesis and wavetable techniques using light and film! The sad thing is that this history has been stocking in archives until someone accidentally found them.