Analysis and suppression of parasitic processes in noncollinear optical parametric amplifiers.
Opt Express
; 19(18): 16797-808, 2011 Aug 29.
Article
de En
| MEDLINE
| ID: mdl-21935041
ABSTRACT
The influence of parasitic processes on the performance of ultra-broadband noncollinear optical parametric amplifiers (NOPA's) is investigated for walk-off and non-walk-off compensating configurations. Experimental results with a white-light-seeded NOPA agree well with numerical simulations. The same model shows that 10% of the output energy of an amplified signal can be transferred into a parasitic second harmonic of the signal. These findings are supported by quantitative measurements on a few-cycle NOPA, where a few percent of the signal energy is converted to its second harmonic in the walk-off compensating case. This effect is reduced by an order of magnitude in the non-walk-off compensating configuration. A detailed study of the phase-matching conditions of the most common nonlinear crystals provides guidelines for designing NOPA systems.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Type d'étude:
Prognostic_studies
Langue:
En
Journal:
Opt Express
Sujet du journal:
OFTALMOLOGIA
Année:
2011
Type de document:
Article
Pays d'affiliation:
États-Unis d'Amérique