Broadband, CEP-stable, ultrafast laser oscillator

The Lund High-Power Laser Facility wants to procure a broadband, CEP-stable, titanium:sapphire ultrafast oscillator.

The oscillator to be procured is supposed to seed an existing titanium:sapphire based chirped pulse amplification (CPA) laser chain.

Scope

The Lund High-Power Laser Facility wants to procure a broadband, CEP-stable, titanium:sapphire ultrafast oscillator.

The oscillator to be procured is supposed to seed an existing titanium:sapphire based chirped pulse amplification (CPA) laser chain.

An ultrafast oscillator is an integral part of any ultrashort pulse source. It provides short laser pulses as seed to a chain of amplifiers in order to obtain short pulses at higher pulse energy. A CEP-stable oscillator (here CEP refers to the carrier-to-envelope phase) emits identical laser pulses at a certain fraction of its repetition rate; usually every fourth pulse is the same (sometimes also every pulse). If the oscillator that seeds the amplifier is CEP-stable, also the output of the amplifier chain can be CEP-stabilized. The particular existing CPA laser chain that the oscillator to be procured is supposed to seed emits pulses with up to 5 mJ pulse energy and 20 fs pulse duration at a repetition rate of 1 kHz. The duration of the emitted pulses is very short and the supported amplification spectrum very broad (740-860 nm) for a titanium:sapphire CPA and therefore the laser chain requires seeding by a broadband oscillator, supporting an approximately homogeneous seed spectrum in the range of at least 730-870 nm. The laser chain has been proven to be CEP-stable before, when seeded with an existing CEP-stable oscillator.

The supplier undertakes to deliver to the purchaser a broadband, CEP-stable, ultrafast, titanium:sapphire based oscillator with the features specified in section 1.3 in this document.