Diode-laser-pumped continuous-wave KTP optical parametric oscillator

Scheidt, M.; Beier, B.; Knappe, R.; Boller, Klaus-J.; Wallenstein, R.

doi:10.1364/josab.12.002087

Cited by 40 publications

(7 citation statements)

References 21 publications

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“…[21] OPOs can also be directly diode pumped provided high power diodes and/or materials with high nonlinear figure of merit (D eff ) are available. [22] Normally, indirect diode pumping of OPO are adopted due to limitations of pump laser diode power in single emitter configuration, power supply constraints, overall size, and cost considerations. With the advancement in laser diode technology, direct pumping using laser diodes could become attractive.…”

Section: Nonlinear Frequency Convertersmentioning

confidence: 99%

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Optical communications in the mid-wave IR spectral band

Prasad

2005

J Optic Comm Rep

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The mid-wave IR (MWIR) spectral band extending from 3 to 5 microns is considered to be a low loss atmospheric window. The MWIR wavelengths are eye safe and are attractive for several free-space applications including remote sensing of chemical and biological species, hard target imaging, range finding, target illumination, and free-space communications. Due to the nature of light-matter interaction characteristics, MWIR wavelength based systems can provide unique advantages over other spectral bands for these applications. The MWIR wavelengths are found to effectively penetrate natural and anthropogenic obscurants. Consequently, MWIR systems offer increased range performance at reduced power levels. Free-space, line-of-sight optical communication links for terrestrial as well as space based platforms using MWIR wavelengths can be designed to operate under low visibility conditions. Combined with high-bandwidth, eye-safe, covert and jam proof features, a MWIR wavelength based optical communication link could play a vital role in hostile environments.A free-space optical communication link basically consists of a transmitter, a receiver and a scheme for directing the beam towards a target. Coherent radiation in the MWIR spectral band can be generated using various types of lasers and nonlinear optical devices. Traditional modulation techniques are applicable to these optical sources. Novel detector and other subcomponent technologies with enhanced characteristics for a MWIR based system are advancing. Depending on the transmitter beam characteristics, atmospheric conditions may adversely influence the beam propagation and thereby increasing the bit error rate. For satisfactory transmission over a given range, the influence of atmosphere on beam propagation has to be analyzed. In this chapter, salient features of atmospheric modeling required for wavelength selection and performance prediction is presented. Potential optical sources and detectors for building a practical MWIR communication link are surveyed. As an illustration, the design configuration and experimental results of a recently demonstrated free-space, Optical communications in the mid-wave IR spectral band 559 obscurant penetrating optical data communication link suitable for battlefield applications is discussed. In this case, the MWIR wavelength was derived using an all solid-state, compact, optical parametric oscillator device. With this device, weapon codes pertaining to small and large weapon platforms were transmitted over a range of 5 km. Furthermore, image transmission through light fog, accomplished using this hardware, is also presented.Advances in source and detector technologies are contributing to the development of cost effective systems compatible with various platforms requirements. In coming years, MWIR wavelengths are anticipated to play a vital role in various human endeavors.

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Section: Nonlinear Frequency Convertersmentioning

confidence: 99%

“…[26] OPOs operating in the MWIR spectral region have been widely demonstrated. [27][28] The OPOs with various cavity configurations can be developed to generate CW or pulsed output. In one configuration, the lasing and OPO interaction was accomplished inside a single nonlinear medium namely Nd:MgO:LiNbO 3 .…”

Section: Nonlinear Frequency Convertersmentioning

confidence: 99%

Optical communications in the mid-wave IR spectral band

Prasad

2005

J Optic Comm Rep

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“…These unique features enable wide applications in many optic, photoelectronic and integrated optical fields, for instance, optical parametric oscillation (OPO), optical parametric generator (OPG), optical parametric amplifier (OPA), second harmonic generation (SHG), phase modulators, nonlinear directional couplers and optical waveguides [1][2][3][4][5][6][7][8][9]. The crystals properties can be modified by the impurities, e. g., transition-metal and rareearth ions, thus affecting the applications.…”

Section: Introductionmentioning

confidence: 99%

Theoretical research of the spin-Hamiltonian parameters for two rhombic W5+ centers in KTiOPO4 (KTP) crystal through a two-mechanism model

Yang

Chen

Zheng

2016

Physica B: Condensed Matter

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“…A further option of direct diode-pumped OPOs is a compact design with a high overall efficiency. Diode-pumped OPOs were first demonstrated by Scheidt et al using single-stripe diodes [77], however the OPO was triplyresonant which makes frequency tuning difficult. Subsequent work thus aimed on increasing the available diode power and to reduce the number of resonant waves, but relied on conventional nonlinear crystals based on birefringent phase matching.…”

Section: Diode-pumped Optical Parametric Oscillatorsmentioning

confidence: 99%

“…Subsequent work thus aimed on increasing the available diode power and to reduce the number of resonant waves, but relied on conventional nonlinear crystals based on birefringent phase matching. With Potassium-Tytanyl-Phosphate (KTP) and Rubidium-Titanyl-Asenate (RTA) crystals diode-pumped DROs were realized [77,78,79,80] and showed an improved stability, tunability and output power. Besides the improvement of the output and beam quality of diodelasers, new crystals with high nonlinearity have been developed.…”

Section: Diode-pumped Optical Parametric Oscillatorsmentioning

confidence: 99%

Properties and Frequency Conversion of High-Brightness Diode-Laser Systems

Boller

Beier

Wallenstein

Topics in Applied Physics

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Abstract. An overview of recent developments in the field of high-power, highbrightness diode-lasers, and the optically nonlinear conversion of their output into other wavelength ranges, is given. We describe the generation of continuous-wave (CW) laser beams at power levels of several hundreds of milliwatts to several watts with near-perfect spatial and spectral properties using Master-Oscillator PowerAmplifier (MOPA) systems. With single-or double-stage systems, using amplifiers of tapered or rectangular geometry, up to 2.85 W high-brightness radiation is generated at wavelengths around 810 nm with AlGaAs diodes. Even higher powers, up to 5.2 W of single-frequency and high spatial quality beams at 925 nm, are obtained with InGaAs diodes. We describe the basic properties of the oscillators and amplifiers used. A strict proof-of-quality for the diode radiation is provided by direct and efficient nonlinear optical conversion of the diode MOPA output into other wavelength ranges. We review recent experiments with the highest power levels obtained so far by direct frequency doubling of diode radiation. In these experiments, 100 mW single-frequency ultraviolet light at 403 nm was generated, as well as 1 W of single-frequency blue radiation at 465 nm. Nonlinear conversion of diode radiation into widely tunable infrared radiation has recently yielded record values. We review the efficient generation of widely tunable single-frequency radiation in the infrared with diode-pumped Optical Parametric Oscillators (OPOs). With this system, single-frequency output radiation with powers of more than 0.5 W was generated, widely tunable around wavelengths of 2.1 m and 1.65 m and with excellent spectral and spatial quality. These developments are clear indicators of recent advances in the field of high-brightness diode-MOPA systems, and may emphasize their future central importance for applications within a vast range of optical wavelengths.What has attracted scientists and engineers most about lasers is, certainly, that strongly directed and monochromatic light beams can be generated with high power. Such radiation with high spatial beam quality and narrow spectral bandwidth is commonly termed high-brightness radiation. The general properties of diode lasers, i.e. small size, robustness, potentially low costs, and their high wall-plug efficiency have so far been the central issues in designing diode lasers for applications. Diode lasers with low brightness, though with R. Diehl (Ed.): High-Power Diode Lasers, Topics Appl.

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Diode-laser-pumped continuous-wave KTP optical parametric oscillator

Cited by 40 publications

References 21 publications

Optical communications in the mid-wave IR spectral band

Optical communications in the mid-wave IR spectral band

Theoretical research of the spin-Hamiltonian parameters for two rhombic W5+ centers in KTiOPO4 (KTP) crystal through a two-mechanism model

Properties and Frequency Conversion of High-Brightness Diode-Laser Systems

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