Photonic Devices I Purpose of the Lab
... Early devices using this principle had the grating within the active region and were found to have too much attenuation. As a result the grating was moved to a waveguide layer immediately adjacent (below) the cavity. The evernescent field accompanying the light wave in the cavity extends into the ad ...
... Early devices using this principle had the grating within the active region and were found to have too much attenuation. As a result the grating was moved to a waveguide layer immediately adjacent (below) the cavity. The evernescent field accompanying the light wave in the cavity extends into the ad ...
BASIC THEORY OF PARTIAL COHERENCE
... In (19) the inner integral is characteristic of the instrumentonly, while the factors t({3) and t* (Il - (3) are determined solely from the object spectrum. However, (19) is not in the form of "object spectrum times transfer function equals image spectrum." The inner integral has been referred to as ...
... In (19) the inner integral is characteristic of the instrumentonly, while the factors t({3) and t* (Il - (3) are determined solely from the object spectrum. However, (19) is not in the form of "object spectrum times transfer function equals image spectrum." The inner integral has been referred to as ...
Microwave frequency generation using a dual
... MHz/mW, as shown in Fig. 4. The latter may be explained by simultaneous reduction in both lasing wavelengths associated with a pump-dependent change in the refractive index and temperature of the fiber amplifier. ...
... MHz/mW, as shown in Fig. 4. The latter may be explained by simultaneous reduction in both lasing wavelengths associated with a pump-dependent change in the refractive index and temperature of the fiber amplifier. ...
The creation and annihilation of optical vortices using cascade
... beam is circularly symmetric. The individual profiles B0 and B1 satisfy the paraxial wave equation and have been shown experimentally to agree with theory [9]. In cascade conical diffraction, a beam propagates through a series of biaxial crystals. This process has recently been exploited in lasers w ...
... beam is circularly symmetric. The individual profiles B0 and B1 satisfy the paraxial wave equation and have been shown experimentally to agree with theory [9]. In cascade conical diffraction, a beam propagates through a series of biaxial crystals. This process has recently been exploited in lasers w ...
univ. physics
... Image of a Point Object: Spherical Mirror Figure shows a spherical mirror with radius of curvature R, with its concave side facing the incident light. The center of curvature of the surface (the center of the sphere of which the surface is a part) is at C, and the vertex of the mirror (the center of ...
... Image of a Point Object: Spherical Mirror Figure shows a spherical mirror with radius of curvature R, with its concave side facing the incident light. The center of curvature of the surface (the center of the sphere of which the surface is a part) is at C, and the vertex of the mirror (the center of ...
Paper
... grating with a Bragg pulse (using the dressing and probe beams), and then observing its time evolution by monitoring the diffracted dressing beam. The grating showed a simple decay at lower dressing beam intensities (Fig. 4a) [9]. At higher intensities, collective gain started to compensate the loss ...
... grating with a Bragg pulse (using the dressing and probe beams), and then observing its time evolution by monitoring the diffracted dressing beam. The grating showed a simple decay at lower dressing beam intensities (Fig. 4a) [9]. At higher intensities, collective gain started to compensate the loss ...
Optics - Jnoodle
... by a narrow slit that the light has to pass before the prism) can be viewed in a microscopelike device. These spectral lines were important in developing the atomic model, with light of different frequencies being emitted as electrons fall from a higher shell to a lower one, or absorbed in the oppos ...
... by a narrow slit that the light has to pass before the prism) can be viewed in a microscopelike device. These spectral lines were important in developing the atomic model, with light of different frequencies being emitted as electrons fall from a higher shell to a lower one, or absorbed in the oppos ...
Synthesis of highly focused fields with circular
... requirements of a specific problem [10]. Interestingly, several authors described inverse methods to find the pupil function from a predetermined field distribution in the focal area [11, 12]. Light shaping can be accomplished by using an optical setup able to generate beams with arbitrary polariza ...
... requirements of a specific problem [10]. Interestingly, several authors described inverse methods to find the pupil function from a predetermined field distribution in the focal area [11, 12]. Light shaping can be accomplished by using an optical setup able to generate beams with arbitrary polariza ...
l .22 `"3: ` 20 29$
... illustrated generally at 60. The outer walls of the wave A microwave generator is provided in which at least guide 60 and the outer cylindrical conductors of the two transmission lines are connected at intervals along coaxial lines 34, 36, 38 and 40 are all at the same refer the length of a wave gui ...
... illustrated generally at 60. The outer walls of the wave A microwave generator is provided in which at least guide 60 and the outer cylindrical conductors of the two transmission lines are connected at intervals along coaxial lines 34, 36, 38 and 40 are all at the same refer the length of a wave gui ...
A day in the life of a Laser scientist
... • Inventing stuff and entrepeneurship: We invented a new type of laser and in 2004 formed a company to commercialise it. • Commercialising research: Finding ways for some of the great research that we do at Macquarie to be taken up by companies and ultimately benefit our community. ...
... • Inventing stuff and entrepeneurship: We invented a new type of laser and in 2004 formed a company to commercialise it. • Commercialising research: Finding ways for some of the great research that we do at Macquarie to be taken up by companies and ultimately benefit our community. ...
A Laser Module for 100Gbps Digital Coherent Optical Transmission System
... obtained the characteristics required for transmission. 1. Introduction The 100 Gbps digital coherent system uses a wavelength tunable laser device that enables the wavelength of the emitted light to be varied, as the light source for the transmitter and also as the local oscillator light source for ...
... obtained the characteristics required for transmission. 1. Introduction The 100 Gbps digital coherent system uses a wavelength tunable laser device that enables the wavelength of the emitted light to be varied, as the light source for the transmitter and also as the local oscillator light source for ...
Helium Neon Laser - Abbe School of Photonics
... wave Eo with no . If no > ne the two beams will have, after a certain propagation distance d, a phase difference of (no − ne ) · d. If this phase difference is equal π/2 and the amplitude of the ordinary and extraordinary beam are equal the phase plate converts linear polarized light into circular p ...
... wave Eo with no . If no > ne the two beams will have, after a certain propagation distance d, a phase difference of (no − ne ) · d. If this phase difference is equal π/2 and the amplitude of the ordinary and extraordinary beam are equal the phase plate converts linear polarized light into circular p ...
SRON presentation - University of Groningen
... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
... But: “Pure” (geometrical) optical systems would require components much larger than λ. In sub- /mm range diffraction is important, and quasi-optics handles this in a theorectical way. ...
Holography
Holography is the science and practice of making holograms. Typically, a hologram is a photographic recording of a light field, rather than of an image formed by a lens, and it is used to display a fully three-dimensional image of the holographed subject, which is seen without the aid of special glasses or other intermediate optics. The hologram itself is not an image and it is usually unintelligible when viewed under diffuse ambient light. It is an encoding of the light field as an interference pattern of seemingly random variations in the opacity, density, or surface profile of the photographic medium. When suitably lit, the interference pattern diffracts the light into a reproduction of the original light field and the objects that were in it appear to still be there, exhibiting visual depth cues such as parallax and perspective that change realistically with any change in the relative position of the observer.In its pure form, holography requires the use of laser light for illuminating the subject and for viewing the finished hologram. In a side-by-side comparison under optimal conditions, a holographic image is visually indistinguishable from the actual subject, if the hologram and the subject are lit just as they were at the time of recording. A microscopic level of detail throughout the recorded volume of space can be reproduced. In common practice, however, major image quality compromises are made to eliminate the need for laser illumination when viewing the hologram, and sometimes, to the extent possible, also when making it. Holographic portraiture often resorts to a non-holographic intermediate imaging procedure, to avoid the hazardous high-powered pulsed lasers otherwise needed to optically ""freeze"" living subjects as perfectly as the extremely motion-intolerant holographic recording process requires. Holograms can now also be entirely computer-generated and show objects or scenes that never existed.Holography should not be confused with lenticular and other earlier autostereoscopic 3D display technologies, which can produce superficially similar results but are based on conventional lens imaging. Stage illusions such as Pepper's Ghost and other unusual, baffling, or seemingly magical images are also often incorrectly called holograms.