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CW-to-pulse conversion using temporal Talbot array illuminators.

Carlos R Fernández-Pousa, Reza Maram, José Azaña

|September 29, 2017

Summary

This summary is machine-generated.

Researchers converted continuous-wave laser light into gigahertz optical pulses using temporal Talbot array illuminators (TAIs). These compact systems offer high efficiency for pulse compression applications.

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Area of Science:

Photonics
Optical Engineering
Laser Technology

Background:

Continuous-wave (CW) lasers are fundamental light sources.
Optical pulse generation is crucial for various applications.
Existing pulse compression techniques have limitations.

Purpose of the Study:

To demonstrate the linear conversion of CW laser light into optical pulses.
To investigate the use of temporal Talbot array illuminators (TAIs) for pulse generation.
To evaluate the performance of TAIs in terms of efficiency and tunability.

Main Methods:

Implementation of temporal TAIs using multilevel phase modulation (PM) and dispersive propagation.
Utilizing a chirped fiber Bragg grating for pulse shaping.
Experimental comparison with time and Fresnel lenses.

Main Results:

Generation of sub-nanosecond optical pulse trains with gigahertz repetition rates.
Observation of satellite pulses due to modulation bandwidth limitations.
Achieved high light gathering efficiency (>87%) for temporal TAIs with moderate compression (q≤8).

Conclusions:

Temporal TAIs offer a compact and efficient method for converting CW light to optical pulses.
The generated pulse characteristics (repetition rate, gain, width) are tunable via the fractional Talbot order.
TAIs show promise for pulse compression systems requiring high efficiency and tailored pulse properties.