Watt-level deep-UV subnanosecond laser system based on Nd-doped fiber at 229 nm - Archive ouverte HAL
Article Dans Une Revue Optics Letters Année : 2023

Watt-level deep-UV subnanosecond laser system based on Nd-doped fiber at 229 nm

Résumé

We report an efficient deep-UV master-oscillator power amplifier (MOPA) laser system at 229 nm that generates 350 ps pulses at 2 MHz repetition rate with an average power of 1.2 W. The use of a polarization-maintaining large mode area neodymium-doped fiber operating on the 4 F 3/2 → 4 I 9/2 transition allows high-power laser emission of up to 28 W near 915 nm in the sub-nanosecond regime with low spectral broadening. Two nonlinear frequency conversion stages (LBO + BBO crystals) in a single-pass configuration directly convert the IR laser emission to deep UV. This laser demonstrates the great potential of Nd 3+ -doped fiber lasers to produce high-power deep-UV emission.
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Dates et versions

hal-04318650 , version 1 (01-12-2023)

Identifiants

Citer

Kilian Le Corre, Benoit Cadier, Alexandre Barnini, Raphaël Florentin, Thierry Robin, et al.. Watt-level deep-UV subnanosecond laser system based on Nd-doped fiber at 229 nm. Optics Letters, 2023, 48 (5), pp.1276. ⟨10.1364/OL.483718⟩. ⟨hal-04318650⟩
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