We distribute this product only in the Czech Republic and Slovakia.

Helios Fire

The automated siro-band TA(Transient Absorption) spectrometer HELIOS Fire from Ultrafast Systems is designed for femtosecond transient absorption measurements. It uses apump-probe excitation method to study the dynamics of photoinduced processes.

HELIOS Fire is designed to work with femtosecond Ti:sapphire or ytterbium lasers. Thanks to its optimized optical design, it achieves increased sensitivity and is also compatible with nJ pump laser pulses.

Increased sensitivity - also possible with nJ laser pulses
Compatible with femtosecond lasers with a repetition rate of 10 Hz - 1000 kHz
High-speed optical delay path
Patentedbeam alignment system
Modular design (optical bench + delay path + electronics and detector box)
Intuitive software for instrument control and measurement data analysis
Broad-spectrum probing (max. 270 - 2400 nm with Ti:sapphire lasers; max. 350 - 2400 nm with ytterbium lasers)
Continuous monitoring of the fluctuation of the probe beam intensity using a reference arm
Time resolution determined by the width of the laser pulses used, typically ~150 fs
High-speed multichannel detectors (fiber spectrographs with CMOS, CCD or InGaAs sensor)
8 ns time window
Separate box for all electronics and detectors
Option to extend the system up to microsecond transient absorption(EOS)

Ultrafast systems LLC

Referenční projekty

Expert advisor

RNDr. Miroslav Kořínek Ph.D.

+420 720 994 252

korinek@optixs.cz

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We will expertly consult your planned application
Our team is able to integrate the product into a larger system
We ensure fast delivery of spare parts and local service

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Parameters

Experimental arrangement

In the standard setup, the amplified femtosecond pulses are first divided into two beams - excitation and probing. The excitation beam is focused on the sample after passing through an attenuator and a mechanical interrupter (and possibly an optical parametric generator). The probing beam is sent on a computer-controlled optical delay path and then directed at the nonlinear crystal, in which broad-spectrum "white" pulses (supercontinuum) are generated. The generated supercontinuum beam is then focused onto the sample.

The spectral range of the probing

HELIOS with Ti:sapphire lasers	HELIOS with ytterbium lasers
270-390 nm	350-750 nm
320-650 nm	480-950 nm
420-780 nm	800-1600 nm
760-840 nm	1600-2400
820-1600 nm
1600-2400 nm

Optical delay path

The nanosecond time window is achieved by using a high-speed optical delay path with a design that ensures high repeatability and reliability.

Time window: 8 ns
Resolution: 14 fs
Minimum step size: 2.8 fs
Max. speed: >10 ns/s
Acceleration: >260 ns/s^2
Automatic beam positioning: 3-5 min

Detectors

Detektory pro TA spektrometr Helios FIRE

HELIOS Fire uses small fiber spectrographs with a concave holographic diffraction grating and a multi-channel sensor (CMOS, CCD or InGaAs) for detection. The entire detection system is housed in a separate box outside the optical bench of the spectrometer.

Sample holders

Cuvette holder with magnetic stirrer
Motorised holder for measuring transparent solid-state samples
Cryostat

System extension

Module for reflection mode measurements
Microsecond transient absorption (Helios + EOS)
TA microscope

Inquire product

Are you interested in product? Send us your requirements via the enquiry form or contact an expert consultant directly. We will be happy to answer your questions and propose a solution according to your needs.

Expert advisor

RNDr. Miroslav Kořínek Ph.D.

+420 720 994 252

korinek@optixs.cz