Synchronization of 1064 and 1342 nm pulses using passive saturable absorbers

Tidemand-Lichtenberg, Peter; Janoušek, Jiří; Melich, Radek; Mortensen, Jesper Liltorp; Buchhave, Preben

doi:10.1016/j.optcom.2004.07.034

Cited by 30 publications

(25 citation statements)

References 9 publications

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“…Many passive Q-switches using Cr 4+ :YAG crystal are ecient elements at 8001200 nm wavelength range, while Q-switches using V 3+ :YAG crystal are efcient elements at 10001500 nm wavelength range. The synchronization of laser pulses facilitates the sum/difference frequency mixing used in conversion long/short wave radiation [1].…”

Section: Introductionmentioning

confidence: 99%

“…1 must be able to generate independent Q-switched pulses, if they are pumped separately, and their repetition rates must be similar in order to synchronize properly; or one laser can be just below threshold and only being able to exceed threshold when the saturable absorber is bleached by the second laser [1,4,5]. Laser pulses must be synchronized * corresponding author; e-mail: pscientific@aec.org.sy very carefully in order to obtain ecient conversion in the nonlinear process, which leads to good understanding of the sum frequency generation (SFG) mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Ghani

Hammadi

2012

Acta Phys. Pol. A

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A mathematical model describing the sum frequency generation of passively synchronized Q-switched pulses simultaneously emitted from two separate Nd 3+ :YVO4 lasers has been demonstrated. This model describes the temporal behavior of the output pulses, and studies the impact of the pumping energy variation on the characteristics of these pulses (output power, pulse separation, pulse widths, delay time). V 3+ :YAG and Cr 4+ :YAG saturable absorbers and a periodically poled KTP crystal are used to achieve and improve the synchronization of the emitted 1342 nm and 1064 nm wavelengths. The synchronization process generates pulsed yellow light with 593.5 nm wavelength, and it can be realized through adjusting the pumping energy of the gain media.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Ghani

Hammadi

2012

Acta Phys. Pol. A

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“…Synchronized Q-switching has been an active field of research in recent years, including both actively and passively Q-switched systems [1][2][3][4]. Synchronization between a quasi-threelevel and a four-level laser is particularly interesting for sum frequency generation into the blue spectral region [2] and pump-probe experiments [5].…”

Section: Introductionmentioning

confidence: 99%

All passive synchronized Q-switching of a quasi-three-level and a four-level Nd:YAG laser

Cheng¹,

Tidemand-Lichtenberg²,

Jensen³

et al. 2010

Opt. Express

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Abstract:Using an all passive approach, synchronized Q-switching of two Nd:YAG lasers, at 946 nm and 1064 nm, is reported. Two laser crystals are used to avoid gain competition, and stable operation is reported for the first time. The pulse trains are synchronized over a wide range of pump powers and a relative timing jitter of 36 ns is achieved. A minimum delay of 64 ns is observed between the two laser pulses, and by making the 946 nm pulse relatively long, a 79% temporal overlap is obtained when compared to the zero-delay scenario.

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“…Synchronized Q switching have previously been demonstrated in both active [6,7] and passive [8][9][10][11][12] systems. Notably, two lasers are mode-matched such that the higher-repetition rate (master) laser bleaches the SA before the lower-repetition rate (slave) laser reaches threshold [9][10][11].…”

mentioning

confidence: 99%

“…Notably, two lasers are mode-matched such that the higher-repetition rate (master) laser bleaches the SA before the lower-repetition rate (slave) laser reaches threshold [9][10][11]. However, to the authors' knowledge, no work has been done on the detailed investigation of timing jitter in synchronized Q switching, in particular, the relative timing jitter between the two synchronized pulse trains.…”

mentioning

confidence: 99%