Mode-locked diode lasers for THz asynchronous optical sampling

Surkamp, Nils; Döpke, Benjamin; Brenner, Carsten; Orend, Kerstin; Baer, Christoph; Musch, Thomas; Prziwarka, Thomas; Klehr, A.; Knigge, Andrea; Hofmann, Martin R.

doi:10.1117/12.2508396

Cited by 5 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optical output from the AR coated facet is collimated using an aspheric lens (A 1 ) and directed towards the output coupler (OC), which provides feedback and completes a resonator with a fundamental repetition rate of 383.1 MHz. The output is amplified with a tapered amplifier (TPA) as used in [10] and subsequently compressed by a single pass Martinez type compressor formed by grating G, achromatic lens AC and mirrors M 1/2 [11]. After each active component, i.e.…”

Section: Methodsmentioning

confidence: 99%

Mode‐locked diode laser‐based two‐photon polymerisation

et al. 2020

View full text Add to dashboard Cite

In this Letter, the authors present the construction of three-dimensional microstructures by two-photon polymerisation induced by ultrashort pulses of a mode-locked diode laser. The ultrafast light source is based on a diode laser with segmented metallisation to realise a waveguide integrated saturable absorber. It is subsequently amplified and compressed resulting in ultrashort laser pulses of 440 fs length and average output power of 160 mW at a fundamental repetition rate of 383.1 MHz. These pulses are coupled into a customised two-photon polymerisation setup. A series of suspended lines were fabricated between support cuboids for testing the process behaviour. A 3D structure with complex features was polymerised to demonstrate the high potential for mode-locked diode lasers in the field of direct laser writing.

show abstract

Section: Methodsmentioning

confidence: 99%

Mode‐locked diode laser‐based two‐photon polymerisation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…One method to process the large bandwidth is to use the subsampling radar principle by means of asynchronous optical sampling (ASOPS) [4]. Two modelocked laser diodes functioning as pulse generators are operated at slightly offset repetition rates so that they can be used to sample each other [5]. Thus, the obtained IF signal is stretched in the time domain, allowing digitization at moderate frequencies.…”

Section: Introductionmentioning

confidence: 99%

A Tunable Dielectric Resonator Oscillator with Phase-Locked Loop Stabilization for THz Time Domain Spectroscopy Systems

Kaesbach

Delden

Musch

2023

IEICE Trans. Electron.

Self Cite

View full text Add to dashboard Cite

Precision microwave measurement systems require highly stable oscillators with both excellent long-term and short-term stability. Compared to components used in laboratory instruments, dielectric resonator oscillators (DRO) offer low phase noise with greatly reduced mechanical complexity. To further enhance performance, phase-locked loop (PLL) stabilization can be used to eliminate drift and provide precise frequency control. In this work, the design of a low-cost DRO concept is presented and its performance is evaluated through simulations and measurements. An open-loop phase noise of −107.2 dBc/Hz at 10 kHz offset frequency and 12.8 GHz output frequency is demonstrated. Drift and phase noise are reduced by a PLL, so that a very low jitter of under 29.6 fs is achieved over the entire operating bandwidth.

show abstract

“…Proof-of-principle demonstrations have shown the feasibility of integrating diode lasers into asynchronous sampling THz-TDS systems [4,5]. The generated pulses from utilized lasers, realized either with an external cavity or monolithically, are shown to be compressible into subpicosecond range.…”

mentioning

confidence: 99%

Picosecond pulses with 40 W peak power from a passively mode‐locked tapered quantum well laser

Wohlfeil

Christopher

Fricke

et al. 2023

Electronics Letters

View full text Add to dashboard Cite

In this letter, the authors present a monolithic edge emitting diode laser intended as a potential key component for the generation of terahertz radiation in a compact time‐domain spectroscopy system. The 6 mm long multi‐section InGaAsP double quantum well (DQW) laser, featured with a 3.6 mm long tapered (TP) gain section, operates at a wavelength of ∼832 nm and generates pulses at a fundamental repetition rate of ∼6.3 GHz in passive mode‐locking operation. Pulses with 2.6 ps width and 40 W peak power are measured. The generated pulses are not bandwidth‐limited and should be compressible for further applications.

show abstract

Mode-locked diode lasers for THz asynchronous optical sampling

Cited by 5 publications

References 6 publications

Mode‐locked diode laser‐based two‐photon polymerisation

Mode‐locked diode laser‐based two‐photon polymerisation

A Tunable Dielectric Resonator Oscillator with Phase-Locked Loop Stabilization for THz Time Domain Spectroscopy Systems

Picosecond pulses with 40 W peak power from a passively mode‐locked tapered quantum well laser

Contact Info

Product

Resources

About