Laser | Ultrafast Systems

When using the Helios with an OPA pump and a white light probe it is not possible to set the compression of an amplifier pulses (i.e. the chirp) in a way that is optimal for both the OPA and the white light in Helios.

UFS December 31, 2022 No Comments

We have encountered this issue before with <40 fs laser pulses. To solve this problem you need to match the group velocity dispersion (GVD) for all beam paths. This is…

We will be using a number of different pump wavelengths for our experiments. How do the ‘Transport Optics’ assemblies that you sell make it easier for beam delivery into a spectrometer?

UFS December 31, 2022 No Comments

The routing (transport) optics kits are used to deliver the pump and probe beams to the Helios or Halcyone and to adjust the timing between various pump and probe beams.…

What is the pump wavelength range? How do we make the pump and the probe beams to have different wavelengths?

UFS December 31, 2022 No Comments

The pump wavelength range is determined by the OPA and/or the Harmonics Generator. There are several options for modifying the laser wavelength in a transient absorption experiment. One is to…

Laser pulse duration (35-50 fs vs 100-200 fs) effect on probe light generation in femtosecond transient absorption spectroscopy: white light stability, temporal resolution, optics damage.

UFS December 31, 2022 No Comments

Have you ever compared the white light stability and the Helios performance with 100 fs and 35 fs pulses from an amplified laser? I am wondering whether there are any…

What other equipment do I need to consider once I have decided on a Femtosecond Transient Absorption Spectrometer such as Helios?

UFS December 31, 2022 No Comments

You would need an excitation light source (laser) and an optical table large enough to accommodate the full set-up. Here are the things you should consider when shopping for a…

Tag: Laser

When using the Helios with an OPA pump and a white light probe it is not possible to set the compression of an amplifier pulses (i.e. the chirp) in a way that is optimal for both the OPA and the white light in Helios.

We will be using a number of different pump wavelengths for our experiments. How do the ‘Transport Optics’ assemblies that you sell make it easier for beam delivery into a spectrometer?

What is the pump wavelength range? How do we make the pump and the probe beams to have different wavelengths?

Laser pulse duration (35-50 fs vs 100-200 fs) effect on probe light generation in femtosecond transient absorption spectroscopy: white light stability, temporal resolution, optics damage.

What other equipment do I need to consider once I have decided on a Femtosecond Transient Absorption Spectrometer such as Helios?

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