title: Picosecond pulses from a cryogenically cooled, composite amplifier using Yb:YAG and Yb:GSAG.
abstract: A cryogenic Yb amplifier using two laser materials, Gd3Sc2Al3O12 and Y3Al5O12 (YAG), has been used to obtain 70 W average power at 5 kHz pulse repetition frequency; the output was compressed to 1.6 ps, compared with an input compressible to 1.4 ps. The gain broadening obtained by combining two media enables shorter pulses than using Yb:YAG alone but retains the power-scaling advantages of cryogenic Yb:YAG.
authors.affiliation: Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, Massachusetts 02420, USA. drand@LL.mit.edu
authors.forename: Darren A
authors.initials: DA
authors.lastname: Rand
authors.forename: Scot E J
authors.initials: SE
authors.lastname: Shaw
authors.forename: Juan R
authors.initials: JR
authors.lastname: Ochoa
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Ripin
authors.forename: Andrew
authors.initials: A
authors.lastname: Taylor
authors.forename: Tso Yee
authors.initials: TY
authors.lastname: Fan
authors.forename: Hector
authors.initials: H
authors.lastname: Martin
authors.forename: Scott
authors.initials: S
authors.lastname: Hawes
authors.forename: Jim
authors.initials: J
authors.lastname: Zhang
authors.forename: Samvel
authors.initials: S
authors.lastname: Sarkisyan
authors.forename: Eric
authors.initials: E
authors.lastname: Wilson
authors.forename: Paul
authors.initials: P
authors.lastname: Lundquist