FemtoFiber ultra 780

Femtosecond fiber laser for two-photon lithography and semiconductor metrology

Powering the fastest two-photon lithography on the market
Super-compact cold laser head
Fully software controllable system
Optional internal AOM

In nanolithography applications and semiconductor microanalysis, resolution and stability are key to generate exceptional results.
TOPTICA's industrial-grade, compact, turn-key, and robust fiber-laser technology provides highest intrinsic stability and allows for deep integration of the light source into your equipment. The excellent spatial beam profile guarantees unmatched focusability and resolution, enabling you to unlock the true potential of your application. Sufficient power, short pulses, and an extremely clean temporal pulse shape combined with options for dispersion compensation and power control make the FemtoFiber ultra 780 the ideal choice for next generation two-photon polymerization and semiconductor analysis.

Semiconductor Inspection

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Specification

Laser Specifications*	SP (Short-pulse)	Standard	HP (High-power)
Center wavelength	780 nm
Pulse duration	< 100 fs	< 150 fs	< 170 fs
Average output power [w. AOM, optional]	> 1000 [>800] mW	> 1000 [>1000] mW	> 1500 [>1200] mW
Repetition rate	80 MHz
Motorized dispersion precompensation (GDD)	-30,000 .. 0 fs²

Additional Information

Typical emission spectrum (linear).

Interferometric autocorrelation.

M² beam propagation with < 1.1 for both X/Y axis and symmetrical shape
Applications
- 2P-Polymerization
- Semiconductor inspection
- Multiphoton Microscopy
- SHG microscopy
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- Product info
Literature
- Scientific Paper: Dennis Eggert, et al., Differentiation of Tumors of the Upper Respiratory Tract Using Optical Metabolic Imaging, Lasers in Surgery and Medicine: Volume 57, Issue 2, February 2025
- Scientific Article: Marie Reischke, Oliver Vanderpoorten, Florian Stroehl, Rapid prototyping of 1xN multifocus gratings via additive direct laser writing - ScienceDirect, Micro and Nano Engineering Volume 19, June 2023, 100186
- Scientific Article: Manfred Bayer, et al., Lifting re SEO strictions on coherence loss when characterizing non-transparent hypersonic phononic crystals, Nature, Scientific Reports 11, Article number: 17174 (2021)
- Scientific Paper: Sponges as bioindicators for microparticulate pollutants? (2021)
- Scientific Article: Yuichi Yoshida, et al., Detection of Lung Cancer Cells in Solutions Using a Terahertz Chemical Microscope, Sensors (2021)
- Scientific Article: Manfred Bayer, et al., Resonant thermal energy transfer to magnons in a ferromagnetic nanolayer, Nature, Nature Communications 11, Article number: 4130 (2020)
- Scientific Paper: Cell and tissue manipulation with ultrashort infrared laser pulses in light-sheet microscopy (2020)
- Scientific Paper: Comparing the performance of a femto fiber-based laser and a Ti:sapphire used for multiphoton microscopy applications (2019)
- Application Note: Time-resolved microscopy and spectroscopy using asynchronously synchronized fiber lasers (2018)
- Application Note: Multiphoton microscopy using a femtosecond fiber laser system (2016)

Beam shape	TEM00, M² < 1.3	TEM00, M² < 1.2
Linear polarization	> 100:1, vertical
Output coupling	Free space
Astigmatism	< 25%	< 20%
Beam asymmetry	0.8 to 1.2
Dimensions laser head	77 x 165 x 300 mm³ (H x W x D)
Weight laser head	< 6 kg
Dimensions supply unit	131 x 484 x 600 mm³
Weight supply unit	< 20 kg
Power supply	24V DC (AC power supply included)
Power consumption	< 150 W
PC Interface	Ethernet, USB
Environment temperature	19 - 25 °C (operating), 0 - 40 °C (storage and transport)
Environment humidity	Non-condensing
Customizations	FemtoFiber ultra dual-color, Custom repetition rate, Pulse-picking