Measuring Embedded Objects

Philtec specializes in the design of fiber optic sensor systems for gaining access to hard-to-reach targets. In March 2019, several dozen model D47 sensors were delivered with long fiber optic cables and very small 90° probes as seen here. The fiber optic cable lengths varied from 21 ft (6.4 m) to 55 ft (16.8 m)… Continue reading

April 16, 2019 Blog, Detectors, Fiber Optics

Measuring Total Thickness Variation (TTV) with an Interferometer

  Total Thickness variation (TTV), and often wedge, is specified in optical windows and substrates. There are two methods for measuring TTV: Front-to-Back (left image above) and Direct (right image above). Both methods utilize Fizeau interferometers, a product line of Äpre Instruments. Front-to-Back Measurement TTV can only be calculated if the front and back measurements … Continue reading

April 16, 2019 Blog, Interferometers, Systems

Using Ultrafast Laser in FT-CARS

A published paper by Hashimoto et al. (2018), entitled “Ultra-Broadband Rapid-Scan Fourier-Transform CARS Spectroscopy with Sub-10-fs Optical Pulses”, leverages the benefits of products from Novanta. The experimental set-up contains a venteon ultra oscillator from Laser Quantum. The paper demonstrates ultra-broadband Fourier-Transform Coherent Anti-Stokes Raman Scattering (FT-CARS) spectroscopy. The technique spanned over 3000 cm-1, particularly useful … Continue reading

April 16, 2019 Blog, Lasers

TORNOS Micro Introduced by EOT

EOT‘s new TORNOS Micro optical isolator is designed to be integrated inside a standard butterfly package diode laser for wide-ranging applications where optical feedback adversely affects performance. EOT’s isolators provide high transmission in the forward direction while strongly attenuating light traveling in the reverse direction, protecting lasers from the destructive effects of back reflections. The … Continue reading

April 15, 2019 Blog, Optics

Advancements in Nanoparticles

A recent paper in nature communications by Kim et al, (2018) ‘Photonic crystal cavities from hexagonal boron nitride’ uses the gem 532 laser from Laser Quantum as the excitation laser for the broadband emission in hexagonal boron nitride and single emitters. The paper examines the development of a scalable quantum photonic technique. It utilises hexagonal … Continue reading

April 15, 2019 Blog, Lasers