Acoustooptic interaction of two light beams in a paratellurite crystal
... We performed an experimental investigation on a paratellurite AO cell where a slow shear acoustic wave was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency ...
... We performed an experimental investigation on a paratellurite AO cell where a slow shear acoustic wave was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency ...
4Pi Microscopy
... lenses for STED, the axial resolution was improved down to 30 to 50 nm (Dyba and Hell, 2002; Dyba et al., 2003). However, as STED is still in its infancy and, unlike I5M and 4Pi microscopy, relies on the specific properties of the dye, it is not surprising that the majority of recent 3D-imaging appl ...
... lenses for STED, the axial resolution was improved down to 30 to 50 nm (Dyba and Hell, 2002; Dyba et al., 2003). However, as STED is still in its infancy and, unlike I5M and 4Pi microscopy, relies on the specific properties of the dye, it is not surprising that the majority of recent 3D-imaging appl ...
738_1.pdf
... epitaxial SrTiO3 films with UV Raman spectroscopy. SrTiO3 is of great interest due to its potential applications in MOSFETs as an alternative gate oxide [11], in compliant substrates as a buffer layer [12], and in frequency agile devices with ferroelectric tunability [13]. The small optical penetrat ...
... epitaxial SrTiO3 films with UV Raman spectroscopy. SrTiO3 is of great interest due to its potential applications in MOSFETs as an alternative gate oxide [11], in compliant substrates as a buffer layer [12], and in frequency agile devices with ferroelectric tunability [13]. The small optical penetrat ...
holography - UCSB Physics
... (Your instructor will have run you through this process, in the light, so you can practice loading the film successfully.) Next, carefully open the film safe. In it you will find an envelope or plastic bag. Open the flap. Remove the second bag. Open the second bag and take out one sheet of film. Pla ...
... (Your instructor will have run you through this process, in the light, so you can practice loading the film successfully.) Next, carefully open the film safe. In it you will find an envelope or plastic bag. Open the flap. Remove the second bag. Open the second bag and take out one sheet of film. Pla ...
Low-Temperature Bonding for Silicon-Based Micro
... and data processing. In addition, the fabrication of Si-based devices is compatible with parallel processing which can potentially lower the cost. One practical example of such system is the early diagnosis and monitoring of human diseases using autofluoresnce or fluorescence lifetime imaging [1]. A ...
... and data processing. In addition, the fabrication of Si-based devices is compatible with parallel processing which can potentially lower the cost. One practical example of such system is the early diagnosis and monitoring of human diseases using autofluoresnce or fluorescence lifetime imaging [1]. A ...
Ultrahigh-Q toroidal microresonators for cavity quantum
... are confined to the interior dielectric in whispering-gallerytype resonators, the atom can interact only with the evanescent field of the cavity mode. In the following discussion, the atom is assumed to be located near the resonator surface at the location where the electric field strength is larges ...
... are confined to the interior dielectric in whispering-gallerytype resonators, the atom can interact only with the evanescent field of the cavity mode. In the following discussion, the atom is assumed to be located near the resonator surface at the location where the electric field strength is larges ...
Diffuse Reflectance Spectroscopy
... through the sample. Using model-based techniques or statistical approaches such as multivariate analysis, optical properties of the sample can be extracted from light distribution in tissue that further leads to valuable diagnostics Fig. 1.1: Basic concept behind information such as the health state ...
... through the sample. Using model-based techniques or statistical approaches such as multivariate analysis, optical properties of the sample can be extracted from light distribution in tissue that further leads to valuable diagnostics Fig. 1.1: Basic concept behind information such as the health state ...
Laser-based displays: a review - Optical Microsystems Laboratory
... lasers can vary with the junction temperature, which will in turn adversely affect the color balance of the display, if left uncontrolled. For a red laser diode, the deviations from the specified wavelength should be less than 0:5 nm, whereas power variations should be kept below 0.7%. Temperature s ...
... lasers can vary with the junction temperature, which will in turn adversely affect the color balance of the display, if left uncontrolled. For a red laser diode, the deviations from the specified wavelength should be less than 0:5 nm, whereas power variations should be kept below 0.7%. Temperature s ...
Get PDF - OSA Publishing
... enhances the nonlinear susceptibility χ(n) of order n. If permitted by selection rules, this supports generation of the n-th harmonics of the driving laser or frequency mixing processes with m additional photons from the same laser field, e.g. generating harmonics of order (n + m). Such resonantly-e ...
... enhances the nonlinear susceptibility χ(n) of order n. If permitted by selection rules, this supports generation of the n-th harmonics of the driving laser or frequency mixing processes with m additional photons from the same laser field, e.g. generating harmonics of order (n + m). Such resonantly-e ...
Picosecond-pulse amplification with an external passive optical cavity
... harmonic generation8,9 and sensitive cavity ring-down spectroscopy,10 to name a few. It has been proposed, both in a recent patent11 and in the scientific literature,12 that this approach can be extended to amplify pulses from a mode-locked laser. The coherent superposition of mode-locked pulses sto ...
... harmonic generation8,9 and sensitive cavity ring-down spectroscopy,10 to name a few. It has been proposed, both in a recent patent11 and in the scientific literature,12 that this approach can be extended to amplify pulses from a mode-locked laser. The coherent superposition of mode-locked pulses sto ...
How much mathematics should optics students know
... having constant phases. Evanescent waves, or leaky or dissociated waves, can be handled too. Gaussian beams, that derive their name from amplitude, and more precisely the fundamental modes emitted by lasers, can be easily described in terms of Gaussian distribution, a generally well known function e ...
... having constant phases. Evanescent waves, or leaky or dissociated waves, can be handled too. Gaussian beams, that derive their name from amplitude, and more precisely the fundamental modes emitted by lasers, can be easily described in terms of Gaussian distribution, a generally well known function e ...
Laboratory experiments for exploring the surface plasmon resonance
... h̄ = 65.8 meV, i.e. = 1.0 × 1014 rad s−1 . ...
... h̄ = 65.8 meV, i.e. = 1.0 × 1014 rad s−1 . ...
3 Introduction to Add
... by the two identical gratings. These reflected signals interfere in the 3dB coupler in such a way that the signal is dropped and the back-reflected light intensity arriving at port1 is zero, providing the coupler is well matched (50% splitter). The transmitted wavelengths are made to interfere in th ...
... by the two identical gratings. These reflected signals interfere in the 3dB coupler in such a way that the signal is dropped and the back-reflected light intensity arriving at port1 is zero, providing the coupler is well matched (50% splitter). The transmitted wavelengths are made to interfere in th ...
Strong Dispersive and Nonlinear Optical Properties of
... Figure 2 displays the intensity build-up, dispersion relation, and group index for a SCISSOR. The buildup of intensity and enhancement of group delay are inextricably linked by conservation laws to proportional reductions in other desirable properties - most notably bandwidth. In the case of a Fabry ...
... Figure 2 displays the intensity build-up, dispersion relation, and group index for a SCISSOR. The buildup of intensity and enhancement of group delay are inextricably linked by conservation laws to proportional reductions in other desirable properties - most notably bandwidth. In the case of a Fabry ...
Neutron reflection: Principles and examples of applications
... flipper and polariser or analyser. Figure 3 shows the four combinations of the initial and final polarisation states needed to measure the four reflectivities, i.e., R++ , R−− , R+− , R−+ . It should be noted that from the polariser to the analyser there must be a small vertical guide field that mai ...
... flipper and polariser or analyser. Figure 3 shows the four combinations of the initial and final polarisation states needed to measure the four reflectivities, i.e., R++ , R−− , R+− , R−+ . It should be noted that from the polariser to the analyser there must be a small vertical guide field that mai ...
Experimental demonstration of a light-ray-direction
... Fig. 4. View through a ray-flipping sheet for various orientations of the sheet. Different rows correspond to different sheet orientations, described by the angle β between the flip direction and the horizontal (Fig. 2). From left to right, the columns show: the value of β, photos of a scene includi ...
... Fig. 4. View through a ray-flipping sheet for various orientations of the sheet. Different rows correspond to different sheet orientations, described by the angle β between the flip direction and the horizontal (Fig. 2). From left to right, the columns show: the value of β, photos of a scene includi ...
Fabrication of concave silicon micro-mirrors
... mirrors and microcavities, here we discuss a new process for making such structures in Si using a process of ion irradiation and electrochemical anodization. This process has been used to fabricate spherical concave profiles which produce a point focus. In addition, concave cylindrical profiles whic ...
... mirrors and microcavities, here we discuss a new process for making such structures in Si using a process of ion irradiation and electrochemical anodization. This process has been used to fabricate spherical concave profiles which produce a point focus. In addition, concave cylindrical profiles whic ...
Single-shot measurement of a 52 fs pulse
... with 0.4-ps rise time exist, but they cannot be used for 100-fs pulses. At this time, there is much theorizing about new measurement systems for femtosecond pulses5 -7 but few experimental demonstrations of their capabilities. The problem is to transform the temporal information (shape of the pulse) ...
... with 0.4-ps rise time exist, but they cannot be used for 100-fs pulses. At this time, there is much theorizing about new measurement systems for femtosecond pulses5 -7 but few experimental demonstrations of their capabilities. The problem is to transform the temporal information (shape of the pulse) ...
A Tunable Fabry-Perot-Interferometer for 3
... layers in the FPI as well as their deposition processes to insure compatibility with those required for patterning the electrodes and the wafers. Optical layers, without further treatment, would not survive the Si wet etching process required to define the electrode patterns. Furthermore, depositing ...
... layers in the FPI as well as their deposition processes to insure compatibility with those required for patterning the electrodes and the wafers. Optical layers, without further treatment, would not survive the Si wet etching process required to define the electrode patterns. Furthermore, depositing ...
Optical tweezers
Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.