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Links to Topics(English):

קישור לחדשות בעברית

 

Lasers

Cameras

Spectroscopy

Optics

Opto-Mechanics

Electronics

Test Equipment (Solar)

Exhibition

Vibration Isolation

Featured company (GRIN lenses)

 

Lasers

 

Price reduction in Pharos lasers and accessories of light  conversion

 


PHAROS

“PHAROS” is a single-unit integrated femtosecond laser system combining millijoule pulse energies and high average power. It features market leading compact size for easy OEM integration and laboratory space saving. Most of “PHAROS” output parameters can be easily set via control pad or PC tuning the laser for your particular application in seconds. Tunability of laser output parameters allow “PHAROS” system to cover applications normally requiring different class of lasers.

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3x9 VECSL Array

 

>150mw / Element

 

TEM000

 

975nm

 

Round beam

 

individual addressable

 

Now available.

 

 

 

Cameras

 

 

New camera models GigE interface till 12MPx

 

 

 

 

Beam profiler, Optimized for IR-Laser’s between 1.5µm and 8µm.

 

Spectroscopy

 

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Spectrometer with integrated reflectance probe

 

Custom Solutions

Control Development, Inc. , offers customized solutions.  An example is the spectrometer pictured above with integrated dual tungsten halogen light sources and pick up fiber.

Wavelength range available is 190nm to 2500nm and is grating and detector dependent.  A variety of detector arrays are available. For 190nm to 1200nm, we offer silicon diode arrays and silicon CCDs (linear and 2D).  For 900nm to 2500nm, we offer a variety of InGaAs arrays.  Arrays are either temperature stabilized or T.E. cooled.

 

This compact and rugged design makes an ideal OEM engine for hand-held and portable spectrometers.

 

 

Determination of Cellulose Crystallinity by Terahertz-Time Domain Spectroscopy

 

 

New video,

introducing Quattro-II

High Speed 3D

Spectrofluorometer & Phosphorimeter.

 

Optics

View EOT’s white paper,

Thermal Lensing Analysis of TGG and its Effect on Beam Quality.

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micro_2

Micro Optics & Assemblies

 

Down to 0.8mm

 

 

 

Opto Mechanics

 

Opto-mechanics at a special discount till end May.

Linear stages and optical mounts, including the below.

 

 

 

Electronics

 

LDN series

 

Laser diode drivers,

 

The new generation of precision CW/Pulsed diode drivers.

 

With features of LDD & LDY.

 

Test equipment

The universal test platform

 

is a low cost platform

 

for positioning, and contacting

 

top/top or top/bottom solar cells.

 

Vibration Isolation

 

OVERVIEW  |  SEM Service Suite

Complete Services for SEM Users

 

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Carl Zeiss Sigma SEM supported by  the AVI-400 Platform

The SEM Service Suite is a complete array of services tailored to optimize the experience of an SEM user receiving an AVI platform. Services provided address all AVI platform needs from the moment the AVI platform is purchased to the verification of the AVI platform's performance. 


Two Service Suites Are Available

  • SEM Service Suite (SEM-SS)
  • SEM Service Suite Plus (SEM-SS+) 

  

 

To learn more about the specific features of the SEM Service Suite, please visit here or please access the following data sheet. 

 

 

LEARN MORE

 

 

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SEM SERVICE SUITE  |  SEM-SS

Seamless and Worry-Free Experience for the AVI Platform

 

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The SEM Service Suite (SEM-SS) is designed to create the best experience for SEM users with Herzan's active vibration isolation (AVI) platform. The SEM-SS is intended for end users who already have an SEM in their laboratory and have measured environmental data (via a site survey). With no hidden costs, concerns, or additional liabilities, the SEM-SS delivers a seamless and worry-free experience for any SEM user.

 

 SEM-SS SERVICES include:

  • Freight Shipment of AVI Platform
  • Lifting Mechanism and Associated Freight Costs (if needed)
  • On-Site Installation Support, including
    • Placement of System
    • Adjustment for Load
    • Operation Verification
    • Tutorial On Use of System  

 

  • Overall Savings: $450
    • Savings compared to purchasing the services individually 

 

SEM-SS DATA SHEET

 

 

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SEM SERVICE SUITE PLUS  |  SEM-SS+

Seamless and Worry-Free Experience for the AVI Platform

 

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The SEM Service Suite Plus (SEM-SS+) is an all-encompassing collection of services tailored to address any aspect of the discovery process an SEM user may have when searching for a vibration isolation platform. 

 

In addition to the extensive services found in the SEM-SS, the SEM-SS+ includes a comprehensive site survey analysis with a curated report, measuring all types of environmental noise (vibration, acoustic, and AC/DC EMI noise). The site survey process includes: environmental data collection, analysis, and recommendations should they be necessary.

 

The SEM-SS+is intended for end users planning to receive an SEM in a new laboratory and are needing a complete understanding of the ambient environmental characteristics before instrument installation begins (often required by instrument manufacturers) 

 

 

SEM-SS+ SERVICES include:

  • Site Survey Analysis with Curated Report
  • Freight Shipment of AVI Platform
  • Lifting Mechanism and Associated Freight Costs (if needed)
  • On-Site Installation Support, including
    • Placement of System
    • Adjustment for Load
    • Operation Verification
    • Tutorial On Use of System 

  

  • Overall Savings: $1,150
    • Savings compared to purchasing the services individually 

 

SEM-SS+ DATA SHEET

 

 

 

 

Exhibition

 

IL Photonics will exhibit at the ICIS , May 12-14 in Dan Panorama Tel Aviv.

 

 

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Rod lenses    lens systems    cylindrical lenses

Objective lenses    endoscope systems

High NA systems    needle end microscopes

Lens arrays    fiber systems    laser line generator

Design

  

Biomedical engineering   endoscopy   fiber application  

Laser diode beam shaping   micro-endoscopy   sensor technology  

Telecommunication  

 

GRIN Lenses

for imaging

For medical applications

GRIN Lenses

GRIN Lenses and Lens Systems for Imaging Optics

GRIN Lens Systems for Medical Applications

 

 

 

Assemblies

For laser diodes

Design

GRIN Assemblies

GRIN Lens Systems for Laser Diode Beam Shaping

Design

 

 

GRINTECH is one of the leading manufacturers of gradient index (GRIN) micro-optic lenses and lens systems.

 

GRINTECH GmbH was founded in December 1999 as a spin-off of the Fraunhofer Institute for Applied Optics and Precision Engineering in Jena, Germany. 

 

GRADIENT INDEX OPTICS Theory

The way a GRadient INdex (GRIN) lens works may be explained best by considering a conventional lens: An incoming light ray is first refracted when it enters the shaped lens surface because of the abrupt change of the refractive index from air to the homogeneous material. It passes the lens material in a direct way until it emerges through the exit surface of the lens where it is refracted again because of the abrupt index change from the lens material to air (see Fig. 1, right). A well-defined surface shape of the lens causes the rays to be focused on a spot and to create the image. The high precision required for the fabrication of the surfaces of conventional lenses aggravates the miniaturization of the lenses and raises the costs of production.

GRIN lenses represent an interesting alternative since the lens performance depends on a continuous change of the refractive index within the lens material. Instead of complicated shaped surfaces plane optical surfaces are used. The light rays are continuously bent within the lens until finally they are focused on a spot. Miniaturized lenses are fabricated down to 0.2 mm in thickness or diameter. The simple geometry allows us a very cost-effective production and simplifies the assembly of your product essentially. Varying the lens length implies an enormous flexibility at hand to fit the lens parameters as, e.g., the focal length and working distance to your special requirements without high research and development efforts and costs. For example, appropriately choosing the lens length causes the image plane to lie directly on the surface plane of the lens so that sources such as optical fibers can be glued directly onto the lens surface.

Fig. 1: GRIN lens

Conventional spherical lens

Fig. 1: GRIN lens versus

Conventional spherical lens

 

GRINTECH produces the GRIN lenses via silver and lithium ion exchange in special glasses. In contrast to the thallium technology, which is conventionally used for the fabrication of GRIN lenses, this unique GRINTECH key technology, where the special shape of the refractive index profiles is to be realized precisely, is non-toxic and bears no health and environmental risks for us as the producer and the user of our products. Refractive index changes up to 0.145, which are similar to those attained via the thallium ion exchange, GRINTECH achieves via the silver ion exchange. Embedding silver ions into the glass or, alternatively, removing them from it allows focusing and diverging lenses to be produced with numerical apertures up to 0.6 and acceptance angles up to 70° for the visible and infrared spectral range. Both processes are performed in rods and slabs resulting in rod lenses and cylindrical lenses with plane optical surfaces.

This large scope of focusing and diverging lenses in rod and cylindrical geometry enables GRINTECH to provide you with compact GRIN lens systems and subassemblies as, e.g., micro optical telescopes, complete endoscopic imaging systems, anamorphic beam shaping optics for diode lasers, and micro optical scanners, in addition to single high-performance lenses. With our competence in the optical design we fit the system to your requirements.

Technical details of the optical design with GRIN lenses:
A radial refractive index profile of nearly parabolic shape realizes a continuous cosine ray trace within a GRIN focusing lens, the period or pitch length P of which does not depend on the entrance height and the entrance angle of the light ray (see Fig. 2).

 

Fig. 2: Ray traces within a GRIN focussing lens of different pitch length

Fig. 2: Ray traces within a GRIN focusing lens of different pitch length

 

Various imaging designs can be realized using the same index profile by choosing different lens lengths:

·         a quarter-pitch lens images a point source on the entrance surface of the lens into infinity or collimates it, respectively. This configuration is usually applied to the collimation of single-mode and multi-mode optical fibers and laser diodes. For high-power laser diodes, GRIN cylindrical lenses are used for the Fast-Axis Collimation. Together with other GRIN components they are easily integrated to compact micro optical systems.

·         a half-pitch lens images an object on the entrance surface inverted on the exit surface of the lens (magnification M = -1).

·         a 1- (2, 3, or more, respectively)-pitch lens images an object on the entrance surface of the lens identically on the exit surface (magnification M = +1). Those lenses are used in endoscopes as relay lenses, which transmit the image from the front part of the endoscope to the eye-piece (see Fig. 3).

Fig. 3: GRIN endoscope

Fig. 3: GRIN endoscope

·         Endoscope objective lenses are somewhat longer than a quarter-pitch lens and image the object field to be viewed at at a typical working distance between 3 and 25 mm and a large viewing angle (³ ± 30°) on the exit surface of the lens on a reduced scale (see Fig. 3). GRINTECH produces these lenses via a non-toxic silver ion exchange in a special glass. A complete endoscopic imaging system is achieved by gluing the objective and the relay lens directly. Prisms, which change the viewing direction are easily mounted on the flat entrance surface of the objective lens.

·         Various magnifications M and working distances s can be realized by choosing an appropriate lens length zl.

The refractive index profile has to fit an ideal shape most accurately to ensure an optimum imaging quality. For focusing lenses, the ideal shape is described by tl_files/content/gradientenoptik/grinoptics_formel_sammel.gifa function which deviates slightly from a parabola, with its maximum index n0 at the center of the profile. The pitch length P results from the gradient constant g, tl_files/content/gradientenoptik/grinoptics_formel_pitch.gif.
The geometrical gradient constant g characterizes the steepness of the index gradient and with the lens length zl it determines the focal length f and the working distance s of the lens, tl_files/content/gradientenoptik/grinoptics_formel_f_s.gif.

Typical focal lengths and working distances of GRINTECH standard lenses are listed in the GRINTECH product specifications. Figure 4 shows the procedure of optically designing an imaging GRIN system using these parameters.

 

Fig. 4: Image formation by a GRIN focusing lens

Fig. 4: Image formation by a GRIN focusing lens

 

The distance between the principal planes P1 and P2 indicates that GRIN lenses have to be treated as "thick" lenses. However, that fact does not influence the outstanding image quality and isoplanatic property of GRIN lenses.

The maximum acceptance angle of a GRIN collimation lens or the maximum viewing angle of a GRIN objective lens, respectively, J is determined by the numerical aperture NA. As in fiber optics, it is derived from the maximum index change of the GRIN profile, tl_files/content/gradientenoptik/grinoptics_formel_brechzahl.gif.

nR is the refractive index at the margin of the profile, and d is the diameter or the thickness, respectively, of the lens.

In addition to focusing lenses, GRINTECH also offers GRIN diverging lenses of high numerical aperture (NA ≈ 0.6) with plane optical surfaces. Diverging lenses are achieved by parabolic-shaped refractive index profiles, with the minimum of the index n0 at the center of the profile, tl_files/content/gradientenoptik/grinoptics_formel_para_brec.gif.

A characteristic ray trace through a diverging lens is shown in Fig. 5. The very short focal lengths of the lenses f are also determined by the lens length zl,tl_files/content/gradientenoptik/grinoptics_formel_f_s_2.gif.

 

Fig. 5: Ray traces in a GRIN diverging lens

Fig. 5: Ray traces in a GRIN diverging lens

 

However, a periodic path of the rays is not obtained in this case. Those lenses are applied to the production of micro optical telescopes and scanners.

All information given here is valid for GRIN rod and cylindrical lenses, which GRINTECH offers you. GRIN lenses with a high numerical aperture (NA > 0.5) are produced by silver ion exchange in a special glass which avoids any coloration in the visible spectral range. The absorption edge of the silver containing glass occurs at a wavelength of λ0.5 = 370 nm. GRIN lenses with low numerical aperture (NA ≤ 0.2) are fabricated via lithium ion exchange. The absorption edge of the glass being used is at a wavelength of λ0.5 = 235 nm. You may find detailed specifications in the product information.

GRINTECH characterizes the refractive index profiles by a unique procedure, the Refracted-Near-Field method (RNF). The quality of collimation lenses is verified by Shearing interferometry and described by a RMS value of the wave front error. Fast-Axis-Collimation cylindrical lenses are additionally tested by a high-power diode laser setup. The image quality of endoscope lenses is characterized by recording images of grid objects (periods down to 1 μm) using a CCD camera.

Abb. 6 / 1

Abb. 6 / 2

Abb. 6 / 3

(B. Messerschmidt, GRINTECH GmbH, Jena)

 

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