Pressure-controlled phase matching to third harmonic in Ar-filled hollow-core photonic crystal fiber.
We report tunable third-harmonic generation (THG) in an Ar-filled hollow-core photonic crystal fiber, pumped by broadband <2 microJ, 30 fs pulses from an amplified Ti:sapphire laser system. The overall dispersion is precisely controlled by balancing the negative dielectric susceptibility of the waveguide against the positive susceptibility of the gas. We demonstrate THG to a higher-order guided mode and show that the phase-matched UV wavelength is tunable by adjusting the gas pressure.
Nold
J
J
Max Planck Institute for the Science of Light, Günther-Scharowsky-Strasse 1, 91058 Erlangen, Germany.
Hölzer
P
P
Joly
N Y
NY
Wong
G K L
GK
Nazarkin
A
A
Podlipensky
A
A
Scharrer
M
M
Russell
P St J
PS
D001128:Argon; D053844:Lasers, Solid-State; D017785:Photons; D011312:Pressure
D001128:Argon