Electro-Optics Archives - Axis Photonique Inc.

AXIS-MIPP Mid-IR Pulse Picker

CHRISTIAN — Tue, 30 Mar 2021 23:31:29 +0000

AXIS-MIPP Mid-IR Pulse Picker

Main Features:

Developped for mid-IR (l = 2.8 µm)
Based on a RTP crystal (2 mm x 2 mm x 20 mm)
Extinction ratio: > 200:1
Uses photodiode signal from laser oscillator (50 MHz)
Pulse picking frequency: 0.8 to 67 kHz
Internal jitter-free delay generator ( 25 ps steps)
2 programmable output channels at picking frequency for applications.
Control via USB interface

Measurements @ 2.8 µm

The fiber laser generates femtosecond pulses @ 2.8 microns at a rate of 45 MHz.

The pulse picker frequency is 67 kHz.

The red arrows represent the oscillator pulses.

The yellow trace is the electro-optical window,

The green signal is the selected femtosecond pulse (seen by a slow photodiode) .

L’article AXIS-MIPP Mid-IR Pulse Picker est apparu en premier sur Axis Photonique Inc..

Femtosecond Laser Phase Scanner for SHG Microscopy

CHRISTIAN — Thu, 19 Mar 2020 23:31:53 +0000

Femtosecond Laser Phase Scanner for SHG Microscopy

Researchers from Institut National de la Recherche Scientifique and Axis Photonique have developed a new Interferometric Second Harmonic Generation (ISHG) Microscope that combines interferometry and SHG microscopy techniques. By recording the SHG signal as well as its phase, this laser microscope allows a better imaging accuracy when studying biological tissues, like cartilage and muscular tissues.

The microscope scans the phase within each pixel of the sample, using a kHz CPA laser and an ultrafast electro-optical phase scanner from Axis Photonique.

In conventional laser-scanning microscopy, images are formed by acquiring the signal from pixel to pixel. Using the new single-scan interferometric SHG microscope, one can obtain more than one order of magnitude reduction in acquisition time by scanning the phase within each pixel, to characterize the relative polarity of various samples. Using the AXIS Femtosecond Laser Phase Scanner, the phase-shift patterns required for interferometry can be applied at each pixel during the scanning of the sample, allowing single-scan I-SHG (1S-ISHG) measurements. Requiring exposure times comparable to standard SHG intensity images, the additional phase information of the signal can thus be retrieved in parallel to its amplitude at the time-scale of seconds. Moreover, slower modulations can be used to enhance the precision of the phase measurement, without any spatial or temporal shift between interferograms, in contrast to conventional frame phase-shifting I-SHG (standard I-SHG).

“Single-scan interferometric second harmonic generation microscopy using a kHz phase-scanner”
M. Pinsard, L.P. Belley, J.M. Piau, C.Y. Côté, H. Ibrahim, F. Légaré,
Opt. Express 27, 38435-38450 (2019).

L’article Femtosecond Laser Phase Scanner for SHG Microscopy est apparu en premier sur Axis Photonique Inc..

AXIS Streak Camera Synchronization Unit

CHRISTIAN — Thu, 25 May 2017 03:03:53 +0000

AXIS Streak Camera Synchronization Unit

Custom Synchronization unit for complex experiments involving femtosecond laser chain and multiple beams (Hz to MHz).

Some ultrafast laser chains are synchronized with a masterclock having a jitter of 100s of picoseconds. To operate an AXIS ultrafast streak camera, one needs a trigger signal with a jitter lower than 15 ps.

The AXIS synchronization unit solves this problem by generating triggers signals from 80MHz optical pulse of the oscillator. It also acts as jitter free delay generator which can control the delay between 0 and 32 ns with steps of 25 ps.

L’article AXIS Streak Camera Synchronization Unit est apparu en premier sur Axis Photonique Inc..

Ultrafast Laser Pulse Shaping

CHRISTIAN — Thu, 25 May 2017 01:40:41 +0000

Ultrafast Laser Pulse Shaping: Custom Pockels Cells

Pockels Cells Systems:

Based on RTP or KDP crystals
Repetition rates up to 1 MHz
Extinction ratio: 20dB (30dB available)
Jitter less than 100ps
Full customized synchronization available
Twin-Peak configuration available

Applications:

Pulse picking from laser oscillator up to 125 MHz
Slicing into long pulses
Contrast enhancement on femtosecond laser chain

Pulse selector for CPA Renenerative Amplifier

Pulse Picker for femtosecond laser

We also repair MEDOX Pockels Cell Drivers. Please contact us for details.

L’article Ultrafast Laser Pulse Shaping est apparu en premier sur Axis Photonique Inc..

AXIS-PHVS: Precision High Voltage Supply

CHRISTIAN — Thu, 25 May 2017 01:01:30 +0000

AXIS-PHVS: Precision High Voltage Supply

Custom High voltage supply with up to 8 channels, each delivering a programmable voltage up to 1kV, 2kV, 4kV, 6kV, 10kV or 15kV. Remote control with fiber communication is available.

Portable system with:

2 ppm stability at constant temperature
15 ppm voltage variation per °C
4W maximum power per channel
Programmable from the keypad/display interface
USB connectivity to PC for remote control
Remote control with fiber communication is available.

L’article AXIS-PHVS: Precision High Voltage Supply est apparu en premier sur Axis Photonique Inc..