Spatial frequency dependence of the energy transfer in two-wave mixing experiments with BSO crystals

Rajbenbach, H.; Huignard, Jean‐Pierre; Loiseaux, Brigitte

doi:10.1016/0030-4018(83)90208-0

Cited by 74 publications

(13 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…With reference to figure 1 (a) therefore, we see that the voltage Va dropped across the BSO, can be divided into three component regions corresponding to lb , lY and lb From equation (8) we can see that as I b increases, for fixed Io, Vy asymptotically approaches Va at a rate dependent on both ly / 21b , and Kb/Ky . Vy as a function of Io can therefore be plotted using (8) .…”

Section: Theoretical Modelmentioning

confidence: 94%

“…23 . This value of m will have the effect of reducing the relevant a56s by a value of (1-m 2 ) or -2-5 per cent but this effect is ignored here [8] . Figure 3 shows the calculated reflectivity (in relative units) as a function of applied electric field for the yellow DFWM region .…”

Section: Rocm2e2mentioning

confidence: 99%

“…Vy as a function of Io can therefore be plotted using (8) . Figure 2 shows this plot using the following values : Va =6000V, Kb =3 .…”

Section: Theoretical Modelmentioning

confidence: 99%

See 2 more Smart Citations

Photoconductive Enhancement of Degenerate Four-wave Mixing Reflectivity in BSO

Eason

Vainos

1988

Journal of Modern Optics

View full text Add to dashboard Cite

Section: Theoretical Modelmentioning

confidence: 94%

Section: Rocm2e2mentioning

confidence: 99%

See 1 more Smart Citation

Photoconductive Enhancement of Degenerate Four-wave Mixing Reflectivity in BSO

Eason

Vainos

1988

Journal of Modern Optics

View full text Add to dashboard Cite

“…Cela peut facilement se faire en éclairant le cristal par une figure d'interférence mobile se déplaçant à la vitesse v, = coJk r selon k r [53,[94][95][96][97]. On peut utiliser deux techniques différentes pour créer ce déplacement.…”

Section: Intensification Du Gain Par La Technique Du Réseau Mobileunclassified

L'effet photoréfractif

Pauliat

Roosen

1998

l'Optique Non Linéaire Et Ses Matériaux

View full text Add to dashboard Cite

Résumé : La souplesse d'emploi des matériaux photoréfractifs est un de leurs principaux attraits. Un même échantillon est sensible sur une plage de longueurs d'onde de plus de 100 nm avec des temps de réponse s'étageant de moins d'une nanoseconde à plus d'une seconde en fonction de la puissance optique mise en jeu. Cette richesse explique le succès de l'effet photoréfractif et aussi les centaines de publications annuelles sur ce sujet. De nombreux matériaux photoréfractifs aux caractéristiques très diverses sont disponibles commercialement. Bien qu'il ne soit pas possible de résumer ici l'ensemble de ces résultats, nous présentons les notions indispensables à la compréhension de ce phénomène nonlinéaire, à l'utilisation de ces matériaux, et au choix des échantillons. Nous n'abordons pas le vaste domaine des applications.

show abstract

“…1 -3 This effect has a number of applications, including beam steering and optical switching, 4 ' 5 two-dimensional optical signal processing, 6 coherent image amplification, 7 and production of an optical oscillator. 8 However, certain optical information-processing procedures generally use a simultaneous multisignal process, e.g., optical associative holographic memory, 9 which is currently a topic of great interest.…”

mentioning

confidence: 99%

Multibeam coupling in photorefractive SBN:Ce

Liu

et al. 1988

Opt. Lett.

View full text Add to dashboard Cite

Theoretical and experimental results are presented for simultaneous multibeam coupling in photorefractive SBN:Ce. Within a single crystal, multiple signals are amplified through a coupling process that employs a single pump. The coupling gain of each signal results from coupling both between the pump and the signal and between different signals. The amount of gain that each signal receives is dependent on the intensity of the incident signal; thus a competition for the gain exists among the various signals.The optical gain of two-beam mixing in a photorefractive material has been well established. 1 -3 This effect has a number of applications, including beam steering and optical switching, 4 ' 5 two-dimensional optical signal processing, 6 coherent image amplification, 7 and production of an optical oscillator. 8 However, certain optical information-processing procedures generally use a simultaneous multisignal process, e.g., optical associative holographic memory, 9 which is currently a topic of great interest. In this Letter we present a theoretical and an experimental study of multibeam coupling in photorefractive SBN:Ce crystals.In the situation illustrated in Fig. 1, the pump wave ER(r, t) and the signal waves E 8 j(r, t) are given by The total space-charge electric field E induced by the interference pattern is given by E = (kBTkg/q)/[l + (kg/ko) 2 ] (ej * eR),where kB is the Boltzmann constant, q is the charge of the mobile charge carriers, kg is the magnitude of the grating wave vector, and ko is a constant of the material that depends on the number density N of the avail- where nRj exp(ikRj) and nij exp(ioij) characterize the spatial holograms written by the spatial intensity interference of waves ER and Esj and waves Eji and ESj, respectively (which can be easily derived from Refs. 1 and 2), and 1 = IARI2 + lAjl2. In the absence of any applied or intrinsic electric field, the expressions for nRj and 0Rj are given by' 0 ' 1 '

show abstract

Spatial frequency dependence of the energy transfer in two-wave mixing experiments with BSO crystals

Cited by 74 publications

References 19 publications

Photoconductive Enhancement of Degenerate Four-wave Mixing Reflectivity in BSO

Photoconductive Enhancement of Degenerate Four-wave Mixing Reflectivity in BSO

L'effet photoréfractif

Multibeam coupling in photorefractive SBN:Ce

Contact Info

Product

Resources

About