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 – 2 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 – 2 ps
Pump pulse energy	0.2 – 5 mJ
Repetition rate	< 25 kHz
Maximum pump power	25 W ¹⁾
Polarization	Horizontal
Spectral bandwidth	< 1.2× transform limit
Pulse-to-pulse energy stability	< 1% RMS deviation ²⁾
Pulse duration stability	< 1% pulse-to-pulse ³⁾
Pulse front tilt	< 10% of pulse duration
Pulse contrast	< 1 : 20
Beam quality (M²)	< 1.3 ⁴⁾
Beam astigmatism	< 0.15 ⁵⁾
Input beam spatial profile	Gaussian – Super Gaussian
Intensity modulation	< 15%, no hotspots ⁶⁾
Beam pointing stability	< 10 μrad ⁷⁾
Beam divergence	< 1.2× diffraction limit
Beam height from optical table	135 – 185 mm
Beam diameter (1/e²)	< 7 mm ⁸⁾

Contact sales@lightcon.com for higher pump power options.
Normalized to average pulse energy, NRMSD.
Normalized to average pulse duration, NRMSD.
M² specification valid for Gaussian beam.
Normalized astigmatism – difference of the waist positions, divided by Rayleigh length.
Normalized to Gaussian or Super-Gaussian fits, NRMSD.
NRMSD, full angle.
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
Conversion efficiency at peak (Signal and Idler combined)	> 25%
Pulse duration	(0.7 – 1) × pump pulse duration
Spectral bandwidth	< 2.5× pump pulse spectral bandwidth
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
Conversion efficiency at peak	> 5%		> 9%	> 6%
Spectral bandwidth	< 3× pump pulse spectral bandwidth
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
Conversion efficiency at peak	> 1.5%	> 0.6%	> 1%
Spectral bandwidth	< 3.5× pump pulse spectral bandwidth
Polarization	Vertical	Horizontal

DFG Extensions (2600 – 20000 nm)

Extension	DFG1	DFG2
Tuning range	2.6 – 11 μm	4 – 20 μm
Conversion efficiency at peak	> 0.7%	> 0.7%
Spectral width	< 3.5× pump pulse spectral bandwidth
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