Multi-GHz repetition rate, femtosecond deep ultraviolet source in burst mode derived from an electro-optic comb.
Opt Express
; 28(25): 37209-37217, 2020 Dec 07.
Article
in En
| MEDLINE
| ID: mdl-33379559
ABSTRACT
We present a femtosecond, 11.48â
GHz intra-burst repetition rate deep UV source at 258â
nm based on forth-harmonic generation (FHG) of an electro-optic (EO) comb operating in burst mode. Second-harmonic generation (SHG) of the burst-mode EO comb in LiB3O5 (LBO) leads to 3.7 W average power and 242 fs root-mean-square pulse duration. A second stage of SHG is further performed using two separate ß-BaB2O4 (BBO) crystals, delivering deep UV pulses at 523â
mW and 294â
mW, with estimated pulse durations of half-ps and sub-300 fs, respectively. At divided pulse repetition rates of 5.7 GHz and 2.9 GHz, FHG is also demonstrated, highlighting the potential of flexible repetition rate operation at the GHz level.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2020
Document type:
Article