Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy

Quevedo-Galán, C.; Durán, Vicente; Rosado, Alejandro; Pérez-Serrano, A.; Tijero, J. M. G.; Esquivias, I.

doi:10.1364/oe.404398

Cited by 27 publications

(9 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combining OI with the use of a pulse pattern generator (PPG) as switching source, we obtained OFCs with 866 tones within 10 dB at f R = 100 MHz [15]. These combs have proven to be useful to perform high-resolution molecular spectroscopy using the DCS technique [16].…”

Section: Rf Frequency Pd Voltagementioning

confidence: 97%

Dual-Comb Spectrometer Based on Gain-Switched Semiconductor Lasers and a Low-Cost Software-Defined Radio

et al. 2021

Self Cite

View full text Add to dashboard Cite

Dual-comb spectroscopy has become a topic of growing interest in recent years due to the advantages it offers in terms of frequency resolution, accuracy, acquisition speed, and signal-to-noise ratio, with respect to other existing spectroscopic techniques. In addition, its characteristic of mapping the optical frequencies into radio-frequency ranges opens up the possibility of using non-demanding digitizers. In this paper, we show that a low-cost software defined radio platform can be used as a receiver to obtain such signals accurately using a dual-comb spectrometer based on gain-switched semiconductor lasers. We compare its performance with that of a real-time digital oscilloscope, finding similar results for both digitizers. We measure an absorption line of a H 13 C 14 N cell and obtain that for an integration time of 1 s, the deviation obtained between the experimental data and the Voigt profile fitted to these data is around 0.97% using the low-cost digitizer while it is around 0.84% when using the high-end digitizer. The use of both technologies, semiconductor lasers and low-cost software defined radio platforms, can pave the way towards the development of cost-efficient dual-comb spectrometers.

show abstract

Section: Rf Frequency Pd Voltagementioning

confidence: 97%

Dual-Comb Spectrometer Based on Gain-Switched Semiconductor Lasers and a Low-Cost Software-Defined Radio

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…This DCS is capable of a spectral coverage of 70 nm, operates in the field for up to 12 months, offers the ability to continuously operate and enables autonomous monitoring across multiple-square-kilometer regions, with emission rates as low as 1.6 g/min. Moreover, scientists from Spain and Ireland [ 18 , 19 , 20 ] realized two combs with mutual coherence through gain switching and optical injections. Three narrow-bandwidth commercial lasers were used.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of All Fiber Free-Running Dual-Comb Spectroscopy

Yang

Liu

et al. 2023

Sensors

View full text Add to dashboard Cite

A dual-comb spectroscopy (DCS) system uses two phase-locked optical frequency combs with a slight difference in the repetition frequency. The spectrum can be sampled in the optical frequency (OF) domain and reproduces the characteristics in the radio frequency (RF) domain through asynchronous optical sampling. Therefore, the DCS system shows great advantages in achieving precision spectral measurement. During application, the question of how to reserve the mutual coherence between the two combs is the key issue affecting the application of the DCS system. This paper focuses on a software algorithm used to realize the mutual coherence of the two combs. Therefore, a pair of free-running large anomalous dispersion fiber combs, with a center wavelength of approximately 1064 nm, was used. After the signal process, the absorption spectra of multiple species were simultaneously obtained (simulated using the reflective spectra of narrow-bandwidth fiber Bragg gratings, abbreviated as FBG). The signal-to-noise ratio (SNR) could reach 13.97 dB (25) during the 100 ms sampling time. In this study, the feasibility of the system was first verified through the simulation system; then, a principal demonstration experiment was successfully executed. The whole system was connected by the optical fiber without additional phase-locking equipment, showing promise as a potential solution for the low-cost and practical application of DCS systems.

show abstract

“…OFCs are optical beams consisting of an evenly spaced coherent superposition of spectral components. In the last decades, they have found a plethora of application fields such as metrology [1,2], optical communications [3,4], astronomy [5], molecular spectroscopy [6,7], and LIDAR [8], among others.…”

Section: Introductionmentioning

confidence: 99%

High-Density and Broad Band Optical Frequency Combs Generated by Pseudo-Random Phase Modulation of Optically Injected Gain-Switched Semiconductor Lasers

Rosado

Fernández‐Ruiz

Corredera³

et al. 2023

Preprint

View full text Add to dashboard Cite

Gain-switched semiconductor lasers with pulsed excitation and optical injection for dual-comb spectroscopy

Cited by 27 publications

References 48 publications

Dual-Comb Spectrometer Based on Gain-Switched Semiconductor Lasers and a Low-Cost Software-Defined Radio

Dual-Comb Spectrometer Based on Gain-Switched Semiconductor Lasers and a Low-Cost Software-Defined Radio

An Investigation of All Fiber Free-Running Dual-Comb Spectroscopy

High-Density and Broad Band Optical Frequency Combs Generated by Pseudo-Random Phase Modulation of Optically Injected Gain-Switched Semiconductor Lasers

Contact Info

Product

Resources

About