Femtosecond wavelength-tunable OPCPA system based on picosecond fiber laser seed and picosecond DPSS laser pump

Danilevičius, R.; Zaukevicius, Audrius; Budriunas, Rimantas; Michailovaś, Andrejus; Rusteika, N.

doi:10.1364/oe.24.017532

Cited by 16 publications

(6 citation statements)

References 24 publications

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“…In our experiment, the idler pulses have negative chirps. By using an Öffner stretcher, which can provide positive chirps for laser pulses, the idler pulse can be compressed 34 , 35 . The shape of the idler pulse can be indirectly controlled precisely by adjusting the seed phase using an AOPDF, which is helpful for compressing its pulse to the TL duration 36 , especially for a few-cycle duration.…”

Section: Resultsmentioning

confidence: 99%

Towards a petawatt-class few-cycle infrared laser system via dual-chirped optical parametric amplification

Midorikawa

Takahashi

2018

Sci Rep

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Expansion of the wavelength range for an ultrafast laser is an important ingredient for extending its range of applications. Conventionally, optical parametric amplification (OPA) has been employed to expand the laser wavelength to the infrared (IR) region. However, the achievable pulse energy and peak power have been limited to the mJ and the GW level, respectively. A major difficulty in the further energy scaling of OPA results from a lack of suitable large nonlinear crystals. Here, we circumvent this difficulty by employing a dual-chirped optical parametric amplification (DC-OPA) scheme. We successfully generate a multi-TW IR femtosecond laser pulse with an energy of 100 mJ order, which is higher than that reported in previous works. We also obtain excellent energy scaling ability, ultrashort pulses, flexiable wavelength tunability, and high-energy stability, which prove that DC-OPA is a superior method for the energy scaling of IR pulses to the 10 J/PW level.

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Section: Resultsmentioning

confidence: 99%

Towards a petawatt-class few-cycle infrared laser system via dual-chirped optical parametric amplification

Midorikawa

Takahashi

2018

Sci Rep

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“…In this paper we present a concept of compact broadband high resolution all optically synchronized SFG spectrometer, which overcomes the above-described shortcomings. The system is based on a multiple-channel picosecond fiber laser [15,16] which serves as a seed for narrowband (~1.5 cm -1 ) picosecond and broadband femtosecond channels. No spectral narrowing is required for picosecond channel because the bandwidth is determined by an active medium used in the regenerative amplifier (RA).…”

Section: Introductionmentioning

confidence: 99%

Broadband high resolution sum frequency generation spectrometer for molecular vibrational spectroscopy at interfaces

Kananavičius

Danilevičius

Januskevicius

et al. 2023

Nonlinear Frequency Generation and Conversion: Materials and Devices XXII

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Broadband Sum Frequency Generation (BB-SFG) spectrometer is a complete solution for femtosecond vibrational spectroscopy designed and manufactured by EKSPLA. System produces optically coupled femtosecond broadband midinfrared pulse covering the spectral range of the molecular "fingerprint" region and narrowband visible pulse which are directed to the sample to produce sum frequency signal. Ultrashort pulses of high intensity allow to get better signal to noise ratio using lower pulse energy thus reducing the possibility of sample modification. It is especially important for aqueous and biological samples. Single measurement can cover up to 800 cm -1 bandwidth which shortens the measurement time and lets obtaining spectrum of the same sample state at the beginning and at the end of measurement, which can be different in case of scanning. The design of BB-SFG helps to overcome the main shortcoming of common broadband SFG spectrometersa complex and energy inefficient narrowband visible pulse channel formation. We use a single all-fiber mode-locked oscillator to generate ultrashort pulses for both broadband femtosecond mid-IR and narrowband picosecond visible channels. Up to 10 µJ energy tunable broadband (>300 cm -1 ) pulses in 2.5-10 µm spectral range are mixed at the sample with less than 2 cm -1 bandwidth visible (532 nm) picosecond pulses in order to produce SFG signal at kHz repetition rates. Real-time spectral scanning technique allows even broader simultaneous spectral acquisition.

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“…[ 1 ] Among them, 2–4 µm ultrafast lasers have attracted much attention, as this bandwidth contains part of molecular fingerprint region, optically transparent windows of the atmosphere, and “absorption peaks covering water and amino compounds.” [ 2 ] As a result, 2–4 µm lasers can be helpful in molecular spectroscopy, infrared distance ranging, material processing, disease detection, and laser surgery applications. To generate laser pulses in 2–4 µm region, possible technical approaches include quantum cascade lasers, [ 3 ] solid‐state lasers, [ 4 ] optical parametric chirped pulse amplifiers, [ 5 ] and fiber lasers. [ 6 ] Quantum cascade lasers are compact and can output nanosecond pulses in mid‐IR, but the inherent speed of electronics limits the generation of femtosecond pulses.…”

Section: Introductionmentioning

confidence: 99%

Advances and Challenges of Ultrafast Fiber Lasers in 2–4 µm Mid‐Infrared Spectral Regions

Zhang,

Wu,

Guang

et al. 2023

Laser & Photonics Reviews

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Mid‐infrared (mid‐IR) ultrafast lasers are widely employed in biomedicine, molecular spectroscopy, material processing, and nonlinear optics. With the improvement of fiber gain media and other fiber optical elements, low‐cost, compact, and high‐efficiency fiber lasers open up new opportunities for 2–4 µm pulse generations, which calls for a comprehensive review of their mode‐locking mechanisms, gain media, and fiber laser system performance. This paper, beginning with an overview of pulse‐generation technologies, reviews recent progress on 2–4 µm mid‐IR ultrafast fiber lasers, including Tm3+‐, Ho3+‐doped, Tm3+/Ho3+ codoped silicate fiber 2 µm lasers, and Er3+‐, Dy3+‐doped, and Ho3+/Pr3+ codoped ZBLAN fiber 2.5–4 µm lasers. Among them, the status of 2–4 µm ultrafast fiber lasers based on 2D material passive mode‐locking is emphatically discussed. Meanwhile, the novel advances on mode‐locking and gain fibers of mid‐IR ultrafast fiber lasers are explored. Furthermore, current and prospective applications of such laser systems are also introduced in detail. This review finally summarizes challenges associated with future development of mid‐IR ultrafast fiber lasers, which provides an outlook on how to achieve more desirable laser performance (e.g., higher average power, higher pulse energy, and longer emission wavelength) that can lead to more practical uses of such lasers.

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Femtosecond wavelength-tunable OPCPA system based on picosecond fiber laser seed and picosecond DPSS laser pump

Cited by 16 publications

References 24 publications

Towards a petawatt-class few-cycle infrared laser system via dual-chirped optical parametric amplification

Towards a petawatt-class few-cycle infrared laser system via dual-chirped optical parametric amplification

Broadband high resolution sum frequency generation spectrometer for molecular vibrational spectroscopy at interfaces

Advances and Challenges of Ultrafast Fiber Lasers in 2–4 µm Mid‐Infrared Spectral Regions

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