Generation of 3.5 nJ femtosecond pulses from a continuous-wave laser without mode locking.
Using time-lens compression in a loop configuration, we generate 516 fs pulses at 3.5 nJ pulse energy from a continuous-wave 1.55 mum source without mode locking. Just as a spatial lens can expand or focus a beam in space, so can a time-lens broaden or compress a pulse in time. By placing a time-lens in a loop, we maximize the efficiency of bandwidth generation by using one time-lens driven at low power to emulate a stack of many lenses. Our system is compact, is all fiber, and allows large tuning of the repetition rate and continuous tuning of the pulse width and center wavelength.
van Howe
James
J
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.
Lee
Jennifer H
JH
Xu
Chris
C