K2-ASOPS High-Power Dual-Comb Laser for ASOPS and Pump-Probe Spectroscopy

Description

The K2-ASOPS is a high-power dual-comb femtosecond laser system engineered for asynchronous optical sampling (ASOPS), pump-probe spectroscopy, nonlinear optical studies, and ultrafast time-domain measurements. Based on a novel shared-cavity dual-comb architecture, the system generates two highly coherent mode-locked femtosecond pulse trains with a precisely controlled repetition rate difference, enabling rapid optical delay scanning without mechanical delay stages.

Designed for ultrafast spectroscopy and precision optical measurements, the K2-ASOPS combines high output power, ultrashort pulse generation, and ultralow relative timing noise in a compact turnkey platform optimized for scientific research and advanced photonic instrumentation.

The system rapidly sweeps optical delays across a 16.6 ns time window at high speeds, enabling efficient pump-probe sampling and high-sensitivity time-resolved spectroscopy. In the frequency domain, heterodyne detection between optical frequency comb lines enables highly precise dual-comb measurements for spectroscopy, ranging, and nonlinear optical characterization.

Operating at 60 MHz or 80 MHz repetition rates with tunable repetition rate differences and sub-cycle relative timing jitter, the K2-ASOPS supports applications requiring exceptional temporal precision and measurement stability. Available options include second-harmonic generation (SHG), third-harmonic generation (THG), supercontinuum generation (SCG), active repetition-rate stabilization, and flexible cooling configurations.

The platform is ideally suited for pump-probe spectroscopy, thin-film inspection, nonlinear microscopy, precision ranging, ultrafast photoacoustics, and rapid-scan nonlinear time-resolved spectroscopy.

Key Advantages:

ASOPS Without Mechanical Delay Stages
The K2-ASOPS enables asynchronous optical sampling using two femtosecond frequency combs with slightly different repetition rates. This approach rapidly scans optical delays electronically, eliminating mechanical translation stages and enabling faster, more stable time-resolved measurements.
Shared-Cavity Dual-Comb Architecture
The novel shared-cavity design generates two highly coherent pulse trains with ultralow relative timing noise in free-running operation. This architecture improves stability, simplifies synchronization, and reduces environmental sensitivity compared to conventional multi-laser systems.
Ultralow Relative Timing Jitter
Sub-cycle relative timing jitter enables high temporal precision for ultrafast spectroscopy, pump-probe experiments, and nonlinear optical measurements requiring exceptional synchronization stability.
High-Power Ultrafast Operation
The system delivers high average power at fundamental and harmonic wavelengths, supporting demanding nonlinear optical applications, microscopy, spectroscopy, and supercontinuum generation.
Flexible Harmonic and Supercontinuum Options
Available second-harmonic generation (SHG), third-harmonic generation (THG), and supercontinuum generation (SCG) options expand wavelength coverage and application flexibility for advanced ultrafast optical experiments.
Compact Integrated Platform
The turnkey architecture integrates laser control, repetition-rate tuning, stabilization, and remote-control functionality in a compact instrument suitable for laboratory and OEM integration.

Specifications

Rep Rate:	60 – 80 MHz
Time Resolution:	1 fs
Laser Wavelength:	350 nm, 525 nm, 1050 nm, Custom
Laser Wavelength Range (option 1):	1040 – 1060 nm
Laser Wavelength Range (option 2):	520 – 530 nm
Laser Wavelength Range (option 3):	347 – 353 nm
Power Per Comb:	>1.5 W
Pulse Duration (FWHM):	<250 fs
Repetition Rate Difference:	tunable between -1000 and +1000 Hz
Dimensions (Laser Head):	540 x 321 x 179 mm
Beam Output Height:	75 mm
Dimensions (K2-Link Control Unit):	395 x 436 x 88 mm
Operating Temperature:	15 – 30 °C
Relative Humidity:	20 – 70% (non-condensing)
Power Consumption:	<150 W
Electrical Requirements:	100-120 VAC, 3 A, 50-60 Hz / 200-240 VAC, 1.5 A, 50-60 Hz

Got questions about specs? Use the inquiry form to ask.

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Features

Compact Solution to ASOPS: Designed for advanced optical sampling techniques.
High-Power for Nonlinear Studies: Ideal for demanding research applications.
Ultralow RIN and Relative Timing Noise: Ensures precision and accuracy in measurements.
Efficient Pump-Probe Sampling: Single-cavity dual-comb laser for ultrafast photoacoustics.
Repetition Rate: 60-80 MHz options available for versatile applications.
High Power Operation: Delivers robust performance for various experiments.
Ultrashort Pulses: Sub-cycle relative timing jitter for enhanced temporal resolution.
Integrated Harmonic Options: Choose between second or third harmonic integration.
Cooling Options: Available with passive (air) or active (water) cooling systems.
Repetition Rate Control: Fine-tune the system for specific experimental needs.
Supercontinuum Option (SCG): Expand the spectral range with supercontinuum generation.

Applications

Pump-Probe Spectroscopy
The K2-ASOPS enables rapid-scan pump-probe measurements with high temporal precision and ultralow timing jitter. The ASOPS architecture eliminates mechanical delay stages while supporting fast acquisition speeds and high measurement sensitivity for ultrafast spectroscopy experiments.
Asynchronous Optical Sampling (ASOPS)
The system is specifically designed for asynchronous optical sampling applications requiring rapid optical delay scanning, stable dual-comb synchronization, and precise femtosecond timing control for ultrafast optical measurements.
Nonlinear Time-Resolved Spectroscopy
The combination of ultrashort pulses, high power, and rapid optical delay scanning enables efficient nonlinear time-resolved spectroscopy across arbitrary delay intervals for studying ultrafast material dynamics and transient optical phenomena.
Thin-Film Inspection
The high temporal precision and rapid scanning capabilities support non-contact thin-film characterization, layer thickness measurements, and semiconductor inspection applications requiring ultrafast optical probing techniques.
Nonlinear Microscopy
The high-power femtosecond output and harmonic generation options make the K2-ASOPS suitable for nonlinear imaging techniques including multiphoton microscopy and harmonic generation microscopy.
Precision Ranging and Metrology
Dual-comb operation enables high-precision optical ranging and interferometric measurements with improved timing stability and fast acquisition speeds for scientific and industrial metrology applications.
Ultrafast Photoacoustics
The system supports high-sensitivity ultrafast photoacoustic measurements for studying acoustic wave propagation, material dynamics, and time-resolved optoacoustic phenomena.
Supercontinuum Generation
The available supercontinuum generation option enables broadband ultrafast light generation for spectroscopy, optical characterization, and nonlinear photonics applications.

Why Asynchronous Optical Sampling (ASOPS)?

Traditional pump-probe spectroscopy systems rely on mechanical delay stages to vary optical path length and scan temporal delays. These systems can be limited by mechanical speed, stability, and complexity.

The K2-ASOPS replaces mechanical delay scanning with asynchronous optical sampling using two femtosecond frequency combs operating at slightly different repetition rates. This technique enables ultrafast optical delay scanning with improved acquisition speed, reduced mechanical complexity, enhanced temporal stability, and higher measurement efficiency.

The shared-cavity dual-comb architecture further improves synchronization stability by generating both pulse trains within the same optical cavity, reducing timing drift and simplifying system operation for advanced ultrafast spectroscopy experiments.

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Frequently Asked Questions

What is the K2-ASOPS system used for?

The K2-ASOPS system is used for applications such as pump-probe sampling, thin film inspection, precision ranging, and nonlinear microscopy.

What is the repetition rate of the K2-ASOPS laser system?

The K2-ASOPS laser system offers repetition rates of 60 MHz or 80 MHz, with a tunable repetition rate difference between -1000 and +1000 Hz.

What are the cooling options available for the K2-ASOPS system?

The K2-ASOPS system offers both passive (air) and active (water) cooling options.

What is the pulse duration of the K2-ASOPS laser?

The pulse duration of the K2-ASOPS laser is less than 250 femtoseconds, with clean sech² pulses.

What are the power outputs for the different wavelengths of the K2-ASOPS laser?

The power outputs are >1.5 W for 1050 nm, >500 mW for 525 nm, and >80 mW for 350 nm.

What are the dimensions of the K2-ASOPS laser head?

The dimensions of the K2-ASOPS laser head are 540 x 321 x 179 mm.

What are the electrical requirements for the K2-ASOPS system?

The electrical requirements are 100-120 VAC, 3 A, 50-60 Hz or 200-240 VAC, 1.5 A, 50-60 Hz.

What is asynchronous optical sampling (ASOPS)?

Asynchronous optical sampling (ASOPS) is an ultrafast measurement technique that uses two mode-locked lasers with slightly different repetition rates to rapidly scan optical delays without mechanical delay stages. This enables faster and more stable pump-probe spectroscopy and time-resolved measurements.

What are the advantages of ASOPS over mechanical delay stages?

ASOPS eliminates moving mechanical components, enabling higher acquisition speeds, improved temporal stability, reduced vibration sensitivity, and more efficient ultrafast spectroscopy measurements compared to traditional delay-stage-based systems.

What is a dual-comb laser system?

A dual-comb laser system generates two optical frequency combs with slightly different repetition rates. The interference between the combs enables high-precision spectroscopy, ranging, and ultrafast optical measurements using heterodyne detection techniques.

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