Spinning pipe gas lens

Notcutt, M.; Michaelis, M.M.; Cunningham, P. F.; Waltham, J. A.

doi:10.1016/0030-3992(88)90025-4

Cited by 17 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By controlling the differential heating at the boundaries and the velocity of the flow, a parabolic refractive index gradient can be obtained as documented in Ref. [12]. On the other hand, we have also checked numerically that the same qualitative result can be obtained by using a glass lens, provided that its focal length f is at least ten times greater than the Rayleigh length of the input beams, which in the case depicted in Fig.3 in experimental setups.…”

supporting

confidence: 62%

See 1 more Smart Citation

Fermionic Light in Common Optical Media

2010

View full text Add to dashboard Cite

Recent experiments have proved that the response to short laser pulses of common optical media, such as air or oxygen, can be described by focusing Kerr and higher order nonlinearities of alternating signs. Such media support the propagation of steady solitary waves. We argue by both numerical and analytical computations that the low-power fundamental bright solitons satisfy an equation of state which is similar to that of a degenerate gas of fermions at zero temperature. Considering, in particular, the propagation in both O2 and air, we also find that the high-power solutions behave like droplets of ordinary liquids. We then show how a grid of the fermionic light bubbles can be generated and forced to merge in a liquid droplet. This leads us to propose a set of experiments aimed at the production of both the fermionic and liquid phases of light, and at the demonstration of the transition from the former to the latter.

show abstract

supporting

confidence: 62%

“…This parabolic potential can be obtained by inducing in the medium a "gas lens" [12], which can be constructed with an electrically heated pipe through which passes a laminar flow of gas. By controlling the differential heating at the boundaries and the velocity of the flow, a parabolic refractive index gradient can be obtained as documented in Ref.…”

mentioning

confidence: 99%

Fermionic Light in Common Optical Media

2010

View full text Add to dashboard Cite

show abstract

“…Positive (focusing) gas lenses were demonstrated in long, heated, spinning tubes [3]. These lenses were used for imaging distant objects [4] and proposed for applications in astronomy.…”

Section: Introductionmentioning

confidence: 99%

Lensing properties of rotational gas flow

Kaganovich¹,

Johnson²,

Gordon³

et al. 2018

Appl. Opt.

View full text Add to dashboard Cite

show abstract

“…They worked with a vertical lens which was used for focusing a high power laser for drilling holes into metal sheets (Michaelis, 1986). Another improvement was to combine both rotation and gas injection to create a steady focus (Notcutt, 1988). An interesting application was when the SPGL was used as a high quality telescope objective to take images of sun spots and moon craters, illustrating the power of such devices (Michaelis, 1991).…”

Section: Wwwintechopencommentioning

confidence: 99%