TOPAS-PS-800 is a picosecond optical parametric amplifier pumped by a fundamental harmonic of a picosecond Ti:Sapphire laser and covering a wavelength range from 1160 to 2600 nm.

Optional frequency mixers extend the tuning range down to 235 nm and up to 20 μm.

Notes

TOPAS-PS-800 specifications are given for the following pump parameters:

800 nm wavelength
1 mJ pulse energy
1 kHz repetition rate
1 – 3 ps pulse duration
Gaussian beam

Note 1: Specifications depend on pump wavelength and pulse duration. If they differ from the values above, contact sales@lightcon.com.

Note 2: TOPAS-PS-800 output energy scales linearly in 1 – 5 mJ range, provided the device is installed and optimized for particular pump energy. The device has to be re-optimized if the pump energy changes more than 10% from the installation value.

Pump Laser Requirements

Model	TOPAS-PS-800
Pump wavelength	770 – 830 nm
Pump pulse duration (FWHM)	1 – 4 ps
Maximum pump power	20 W
Pump pulse energy	0.3 – 4 mJ
Repetition rate	< 20 kHz
Polarization	horizontal
Spectral bandwidth	< 1.2× transform limit
Pulse-to-pulse energy stability	< 1% RMS deviation ¹⁾
Pulse duration stability	⩽ 1% pulse-to-pulse
Pulse front tilt	< 10% of pulse duration
Pulse contrast	> 1 : 20
Beam quality (M²)	< 1.3
Beam astigmatism	< 0.15
Input beam spatial profile	Gaussian – Hyper-Gaussian
Intensity modulation	< 15%, no hotspots
Beam pointing stability	< 10 μrad
Beam divergence	< 1.2× diffraction limit
Beam height from optical table	135 – 185 mm
Beam diameter, 1/e²	< 7 mm ²⁾

Normalized to average pulse energy, NRMSD.
Optional external telescope can be ordered for the beam diameter of 7 – 28 mm.

Main Output (1160 – 2600 nm)

Model	TOPAS-PS-800
Tuning range (Signal and Idler combined)	1160 – 2600 nm
Pulse energy at peak (Signal and Idler combined)	> 250 μJ
Pulse duration	(0.7 – 1) × pump pulse duration
Spectral bandwidth	< 30 cm^-1
Polarization	Vertical (Signal) Horizontal (Idler)
Pulse-to-pulse energy stability	< 5% RMS deviation ¹⁾

Normalized to average pulse energy, NRMSD.

VIS Extensions (475 – 1160 nm)

Extension	Separate mixer stage (SHS, SHI)		Separate mixer stage (SFS, SFI) ¹⁾
	SHS	SHI	SFS	SFI
Tuning range	580 – 800 nm	800 – 1160 nm	475 – 533 nm	533 – 600 nm
Pulse energy at peak	> 50 μJ / 5%		> 90 μJ / 9%	> 60 μJ / 6%
Spectral bandwidth	< 35 cm^-1
Polarization	Horizontal	Vertical

Fresh pump option not available.

UV Extensions (240 – 480 nm)

Extension	Separate mixer stage (FHS, FHI)		Separate mixer stage (SH of SFS, SFI)
	FHS	FHI	SH of SFS	SH of SFI
Tuning range	290 – 400 nm	400 – 480 nm	240 – 266 nm	266 – 295 nm
Pulse energy at peak	> 15 μJ / 1.5%	> 6 μJ / 0.6%	> 10 μJ / 1%
Spectral bandwidth	< 40 cm^-1
Polarization	Vertical	Horizontal

DFG Extensions (2600 – 20000 nm)

Extension	DFG1	DFG2
Tuning range	2.6 – 11 μm	4 – 20 μm
Pulse energy	> 7 μJ / 0.7% @ 4 μm > 1 μJ / 0.1% @ 10 μm	> 7 μJ / 0.7% @ 6 μm > 1 μJ / 0.1% @ 10 μm > 0.2 μJ / 0.02% @ 18 μm
Spectral width	< 40 cm^-1
Polarization	Horizontal

Publications

The origin of efficient triplet state population in sulfur-substituted nucleobases

S. Mai, M. Pollum, L. Martínez‑Fernández, N. Dunn, P. Marquetand, I. Corral, C. E. Crespo‑Hernández, and L. González, Nature Communications 1 (7) (2016).

Investigations of Polymyxin B-Phospholipid Interactions by Vibrational Sum Frequency Generation Spectroscopy

C. Ohe, Y. Ida, S. Matsumoto, T. Sasaki, Y. Goto, M. Noi, T. Tsurumaru, and K. Itoh, The Journal of Physical Chemistry B 46 (108), 18081-18087 (2004).

Sum-frequency spectroscopy TOPAS-PS-800

Datasheets