Tunable upconverted optical parametric oscillator with intracavity adiabatic sum-frequency generation

Porat, Gil; Suchowski, Haim; Silberberg, Yaron; Arie, Ady

doi:10.1364/ol.35.001590

Cited by 13 publications

(15 citation statements)

References 18 publications

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“…These processes are frequency cascaded and spatially‐cascaded. In the context of adiabatic processes, an optical parametric oscillator (OPO) has been cascaded with adiabatic SFG, and was experimentally demonstrated to provide efficient and tunable up‐conversion of a fixed‐frequency laser . Unfortunately, the length of a single QPM modulated crystal is technologically limited.…”

Section: Multi‐process Adiabatic Interaction With Undepleted Pumpmentioning

confidence: 99%

Adiabatic processes in frequency conversion

Suchowski

Porat

Arie

2013

Laser & Photonics Reviews

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143

103

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Adiabatic evolution, an important dynamical process in a variety of classical and quantum systems providing a robust way of steering a system into a desired state , was introduced only recently to frequency conversion . Adiabatic frequency conversion allowed the achievement of efficient scalable broadband frequency conversion and was applied successfully to the conversion of ultrashort pulses, demonstrating near‐100% efficiency for ultrabroadband spectrum . The underlying analogy between undepleted pump nonlinear processes and coherently excited quantum systems was extended in the past few years to multi‐level quantum systems, demonstrating new concepts in frequency conversion, such as complete frequency conversion through an absorption band . Additionally, the undepleted pump restriction was removed, enabling the exploration of adiabatic processes in the fully nonlinear dynamics regime of nonlinear optics . In this article, the basic concept of adiabatic frequency conversion is introduced, and recent advances in ultrashort physics, multi‐process systems, and the fully nonlinear dynamics regime are reviewed.

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Section: Multi‐process Adiabatic Interaction With Undepleted Pumpmentioning

confidence: 99%

Adiabatic processes in frequency conversion

Suchowski

Porat

Arie

2013

Laser & Photonics Reviews

Self Cite

143

103

View full text Add to dashboard Cite

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“…If a pulsed laser was used for upconversion, adiabatic phase matching [8] could be used as an alternative method to obtain broadband upconversion. However, since incoherent light is usually only slowly varying in time, this would result in much lower time-averaged quantum efficiencies.…”

Section: Resultsmentioning

confidence: 99%

A simple model for 2D image upconversion of incoherent light

Dam

Pedersen

Tidemand-Lichtenberg

2011

Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X

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We present a simple theoretical model for 2 dimensional (2-D) image up-conversion of incoherent light. While image upconversion has been known for more than 40 years, the technology has been hindered by very low conversion quantum efficiency (~10 -7 ). We show that our implementation compared to previous work can result in a feasible system: Using intracavity upconversion and Quasi Phase Matching (QPM) nonlinear materials provide increased conversion efficiency. Using a QPM crystal and choosing the wavelengths so the first order term in the phasematch wavelength acceptance vanishes, results in very large wavelength acceptance. This work describes how the bandwidth acceptance can be predicted and designed. This gives promise of a new way to make infrared imaging devices with tunable spectral sensitivity.

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“…25 Cascaded DFG-SFG could also be implemented on chirped QPM devices by using a two-wavelength pump scheme. 26 In this work, we reported the use of temperature-tuned IR frequency comb as a spectrally resolved tool to investigate the nonlinear up-conversion processes in step-chirped QPM devices. From L ¼ 12 mm long step-chirped QPM devices, we observed green frequency comb generated from 510 nm to 555 nm with 10% conversion efficiency under an average IR pump comb power of 200 mW.…”

Section: Nonlinear Photonic Crystalsmentioning

confidence: 99%

Generation of green frequency comb from chirped χ(2) nonlinear photonic crystals

Lai

Chang

Yang

et al. 2014

Applied Physics Letters

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Spectrally broad frequency comb generation over 510–555 nm range was reported on chirped quasi-phase-matching (QPM) χ(2) nonlinear photonic crystals of 12 mm length with periodicity stepwise increased from 5.9 μm to 7.1 μm. When pumped with nanosecond infrared (IR) frequency comb derived from a QPM optical parametric oscillator (OPO) and spanned over 1040 nm to 1090 nm wavelength range, the 520 nm to 545 nm up-converted green spectra were shown to consist of contributions from (a) second-harmonic generation among the signal or the idler modes, and (b) sum-frequency generation (SFG) from the neighboring pairs of the signal or the idler modes. These mechanisms led the up-converted green frequency comb to have the same mode spacing of 450 GHz as that in the IR-OPO pump comb. As the pump was further detuned from the aforementioned near-degeneracy point and moved toward the signal (1020–1040 nm) and the idler (1090–1110 nm) spectral range, the above QPM parametric processes were preserved in the chirped QPM devices to support up-converted green generation in the 510–520 nm and the 545–555 nm spectral regime. Additional 530–535 nm green spectral generation was also observed due to concurrence of multi-wavelength SFG processes between the (signal, idler) mode pairs. These mechanisms facilitate the chirped QPM device to support a single-pass up-conversion efficiency ∼10% when subject to an IR-OPO pump comb with 200 mW average power operated near- or off- the degeneracy point.

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Tunable upconverted optical parametric oscillator with intracavity adiabatic sum-frequency generation

Cited by 13 publications

References 18 publications

Adiabatic processes in frequency conversion

Adiabatic processes in frequency conversion

A simple model for 2D image upconversion of incoherent light

Generation of green frequency comb from chirped χ(2) nonlinear photonic crystals

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