Catalog X
200Pages

enlightening spectroscopy

INTRODUCTION Dear customer, After being in this industry for 25 years, I am still excited and proud to present to you our new catalog. In this tenth edition, we showcase all of our instruments and accessories for fiber-optic spectroscopy. As the leading innovator in the development and application of miniature spectrometers we continue to develop and introduce new instruments. Avantes instruments and accessories are also integrated into many OEM applications in many industries and markets throughout the world. With a quarter of a century of experience in fiber optic spectroscopy and...

Avantes is proud to announce the latest additions to our extensive line of products. These are our highlights: AvaSpec-ULS4096CL-EVO The latest addition to the EVO family: the AvaSpec-ULS4096CL-EVO. With its 4096 pixels, this spectrometer is perfect for high-resolution applications like plasma measurements and LIBS. page 31 AvaSpec-NIR256/512-1.7-HSC-EVO Our new series of cooled NIR spectrometers. The thermoelectrical cooling ensures optimal noise condition, even at longer integration times. AvaSpec-NIR256/512-1.7-EVO Both the AvaSpec-NIR256-1.7-EVO and the AvaSpec-NIR512-1.7-EVO offer the...

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Optical Bench Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 How to configure a spectrometer for your application?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 How to choose...

Mini Transmission Dip Probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Transmission Dip Probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Transmission Dip Probes with Variable Path Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Special Fiber Assemblies and Probes....

INTRODUCTION A spectroscopic instrument or spectrometer generally consists of entrance slit, collimator, a dispersive element, such as a grating or prism, focusing optics and detector. In a monochromator system there is normally also an exit slit, and only a narrow portion of the spectrum is projected on a one-element detector. In monochromators the entrance and exit slits are in a fixed position and can be changed in width. Rotating the grating scans the spectrum. The development of micro-electronics during the 90’s in the field of multi-element optical detectors, such as Charged Coupled...

Thanks to the need for fiber-optics in the communication technology, low absorption silica fibers have been developed. Similar fibers can be used as measurement fibers to transport light from the sample to the optical bench of the spectrometer. The easy coupling of fibers allows a modular build-up of a system that consists of light source, sampling accessories and fiber-optic spectrometer. Furthermore fiber-optic enable the introduction of sampling into harsh and difficult to access environments. The modularity, flexibility and speed of measurement made possible by fiber-optic spectrometers...

Optical Bench Design Avaspec-ULS Optical Bench Design: Symmetrical Czerny-Turner 1. Detector 2. SMA Connector 3. Grating 4. Slit, mode stripper 7. Focusing mirror 8. CPC light traps The heart of most AvaSpec fiber-optic spectrometers is an optical bench with 37.5, 50, 75 or 100 mm focal length, developed in a symmetrical Czerny-Turner design. Light enters the optical bench through a standard SMA-905 connector and is collimated by a spherical mirror. A plain grating diffracts the collimated light; a second spherical mirror focuses the resulting diffracted light. An image of the spectrum is...

Avantes offers a variety of different detector types, each with different sensitivity curves (see figure 3, page 18 and figure 4, page 20). The AvaSpec instrument line is divided into multiple groups based on general requirements. The AvaSpec-Starline is comprised of general purpose UV/VIS instruments with low-cost CCD or CMOS detectors. The AvaSpec Sensline is comprised of higher performance back-thinned CCDs and thermo-electrically cooled CCD UV/VIS instruments. These instruments are particularly better in the UV and NIR range, compared to standard CCD and CMOS detectors. The AvaSpec...

Spectrometers Application Biomedical Chemometry Color Fluorescence Fruit-sugar Gemology High-resolution High UV/NIR-Sensitivity Irradiance Laserdiode LED LIBS Raman Solar Thin Films UV/VIS/NIR NIR AvaSpec-type Grating OSC OSC-UA OSC-UA OSC-UA The grating can only be changed by Avantes. Therefore, choose your grating wisely. Our application specialists are available to support you with your choice. In general, a higher resolution means a lower bandwidth. By combining multiple spectrometers in our AvaSpec-Dual or rack-mountable versions, you can create one virtual spectrometer with...

How to choose the right grating A diffraction grating is an optical element that separates incident polychromatic radiation into its constituent wavelengths. A grating consists of series of equally spaced parallel grooves formed in a reflective coating deposited on a suitable substrate. The way in which the grooves are formed separates gratings in two types, holographic and ruled. The ruled gratings are physically formed onto a reflective surface with a diamond on a ruling machine. Gratings produced from laser constructed interference patterns and a photolithographic process are known as...

Figure 2a Grating Efficiency Curves