White Papers

CEO/CEP stabilisation of Ti:sapphire femtosecond lasers without AOM

By Laser Quantum
11 April 2014

White Paper Lead ImageThe carrier-envelope offset frequency and phase of a Ti:sapphire femtosecond laser can be stabilised by directly feeding back to the output power of a 532nm finesse pure 10 Watt pump laser with our new CEP feature. The performance with this approach matches that of traditional setups employing acousto-optic modulators in the pump beam (~100 mrad integrated phase noise) but has potential for massive improvement due to the enhanced available modulation bandwidth compared to AOMs (approximately 700kHz versus tens of kHz).

Improving Absorption Measurements through Light Source Selection

By Yvette Mattley, Ocean Optics
25 March 2014

Stray light limits the maximum absorbance level achievable with a given spectrometer. Once the stray light limit is reached, sample dilution or a smaller pathlength is required to measure more concentrated samples. In this application note, we show the impact of stray light on the maximum absorbance level and describe how optimizing the choice of light source can minimize stray light and increase the maximum absorbance measured.

Choosing an optical filter

By Edmund Optics
11 March 2014

White Paper Lead ImageThis white paper will help users choose the correct optical filter for any application, with advice on terminology, fabrication techniques, and the various types of filter

Production of precision optics using laser micro-machining

By Julian Hayes
2 January 2014

PowerPhotonic has developed a revolutionary new technology for the fabrication of freeform optical components in silica glass.

Performance criteria for the choice of compact spectrometers

By Ken Norris, Horiba Scientific
24 October 2013

The choices made by optical engineers and designers on the layout of the spectrometer can have a significant impact on the performance and effectiveness of the instrument not to mention the cost of manufacture. This paper offers some simple guidance on this process.

Choosing an OEM Spectrometer

By Michael W Allen, PhD, Ocean Optics
26 September 2013

Choosing a spectrometer for your new product is similar to choosing a spectrometer for your lab experiment. However, there are additional considerations that relate to making a product tailored to your application requirements, to the growing scale of your business and to the specific needs of your customers

The benefits of colour-corrected optical lenses

By Edmund Optics
3 September 2013

White Paper Lead ImageColour-corrected aspheric lenses reduce both spherical and chromatic aberration, making them ideal for a range of applications where precision results and image quality are key

In-situ re-optimisation for new levels of process control in optical thin films

By Stephan Waldner, Allan Jaunzens, Evatec
3 July 2013

White Paper Lead ImageFrom wafer level optics to 3D imaging, a new 'in-situ' process re-optimisation technique for continuous process adaption during deposition will enable rapid process development and new levels of production yield in optical thin films by sputter or evaporation.