Multi-microjoule, MHz repetition rate Ti:sapphire ultrafast regenerative amplifier system | Zendy

Xiaoshi Zhang | Zendy; E. Schneider | Zendy; G. Taft | Zendy; Henry Kaptyen | Zendy; Margaret M. Murnane | Zendy; Sterling Backus | Zendy

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Multi-microjoule, MHz repetition rate Ti:sapphire ultrafast regenerative amplifier system

Author(s) -

Xiaoshi Zhang,

E. Schneider,

G. Taft,

Henry Kaptyen,

Margaret M. Murnane,

Sterling Backus

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.007015

Subject(s) - ultrashort pulse , materials science , chirped pulse amplification , laser , optics , amplifier , regenerative amplification , optoelectronics , sapphire , grism , ultrafast laser spectroscopy , ti:sapphire laser , pulse duration , femtosecond , physics , cmos , stars , astronomy , hubble space telescope

We demonstrate a cryogenically cooled Ti:sapphire ultrafast regenerative amplifier laser system producing >20 μJ energies at 50 kHz, >12 μJ at 200 kHz and >3.5 μJ at 1MHz with repetition rates continuously tunable from 50 kHz up to 1.7 MHz in a footprint of only 60x180 cm². This laser uses down-chirped pulse amplification employing a grism stretcher and a glass-block compressor, achieving sub-60-fs pulse duration. This laser represents a several-times improvement in repetition-rate and average power over past Ti:sapphire-based ultrafast lasers in this class. We discuss the unique challenges and solutions for this laser system. This laser system has wide applications especially in ultrafast photoemission, nonlinear imaging and spectroscopy, as well as for micro/nano-machining and ultrafast laser therapy and surgery.

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