Efficient TEM_00-mode operation of a laser-diode side-pumped Nd:YAG laser

Welford, D.; Rines, David M.; Dinerman, B. J.

doi:10.1364/ol.16.001850

Cited by 34 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When a laser-atom system is modelled in LASED the default setting is that the spatial intensity profile of the laser beam is uniform. The user can however also specify a two-dimensional (2D) Gaussian laser beam profile, so as to emulate a TEM 00 mode [25]. For a Gaussian beam the intensity as a function of the radial distance from its beam axis r is given by…”

Section: A Gaussian and Doppler Averagingmentioning

confidence: 99%

LASED: A Laser-Atom Interaction Simulator derived from Quantum Electrodynamics

Patel,

Harvey,

Murray

2022

Preprint

View full text Add to dashboard Cite

Section: A Gaussian and Doppler Averagingmentioning

confidence: 99%

LASED: A Laser-Atom Interaction Simulator derived from Quantum Electrodynamics

Patel,

Harvey,

Murray

2022

Preprint

View full text Add to dashboard Cite

“…[1][2][3][4][5] One of the best types of such sources is the Nd:YAG laser pumped by quasicontinuous wave diode laser bars. [6][7][8] During the past years, much research has been carried out on the generation of Qswitched Nd:YAG lasers with side-pumped structure. Sun et al characterized a side-pumped 0.5 J pulse Nd:YAG laser at 100 Hz with 80 ns pulse width.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of electro-optical Q -switched pulsed Nd:YAG laser

et al. 2016

View full text Add to dashboard Cite

We report the specification of a compact and stable side diode-pumped Q-switched pulsed Nd:YAG laser. We experimentally study and compare the performance of the pulsed Nd:YAG laser in the free-running and Q-switched modes at different pulse repetition rates from 1 Hz to 100 Hz. The laser output energy is stabilized by using a special configuration of the optical resonator. In this laser, an unsymmetrical concave-concave resonator is used and this structure helps the mode volume to be nearly fixed when the pulse repetition rate is increased. According to the experimental results in the Q-switched operation, the laser output energy is nearly constant around 70 mJ with an FWHM pulse width of 7 ns at 100 Hz. The optical-to-optical conversion efficiency in the Q-switched regime is 17.5%.

show abstract

“…Diode-side pumping for the laser medium is an outstanding method to obtain high output power. It is used in the fields of single-mode laser [29,30], second harmonic generation [31,32], and stimulated Raman scattering [33,34]. Because the diode laser is uniformly incident into the laser rod, the thermal effect is relatively light in the diode-side pumped configuration.…”

mentioning

confidence: 99%

Enhancement of Intracavity-Pumped Terahertz Parametric Oscillator Power by Adopting Diode-Side Pumped Configuration Based on KTiOPO4 Crystal

Gao¹,

Zhang²,

Zhang³

et al. 2019

Crystals

View full text Add to dashboard Cite

In this paper, a KTiOPO 4 (KTP) crystal is used as the nonlinear medium in an intracavity-pumped terahertz parametric oscillator (TPO) based on stimulated polariton scattering (SPS). Almost all the reported intracavity SPS sources adopt the diode-end pumped configuration, and the THz output power is limited by the serious thermal effect and small fundamental beam size. For improving the THz output power, we propose diode-side pumping for the laser medium to get a higher fundamental power and a larger fundamental beam size. A convex-plane fundamental laser resonator is used to further offset the thermal effect and increase the fundamental beam size. The THz frequency of the intracavity-pumped KTP terahertz parametric oscillator can be discontinuously tuned from 3.19 THz to 5.94 THz with three gaps. The fundamental beam diameter in the KTP crystal is about 1.3 mm. The maximum average THz power is 166 µW at 5.74 THz under a pulse repetition frequency (PRF) of 6 kHz and a diode pump power of 98 W. By means of the diode-side pumped configuration, the maximum THz output power is more than two-fold higher compared to the diode-end pumped configuration reported using the KTP crystal.Crystals 2019, 9, 666 2 of 8 the momentum conservation law. Because the refractive index of the nonlinear crystal in the THz wave spectral range is large, the SPS process must obey the non-collinear phase matching condition.In 2014, Wang reported an external cavity-pumped SPS source using a KTP crystal. This is the first time that a nonlinear medium different from the traditional crystal LiNbO 3 (LN) was realized to generate THz radiation based on SPS. Different from the THz frequency of 0.6-3.5 THz obtained from the LN crystal [16][17][18][19][20], the generated THz frequency could be tuned from 3.17 THz to 6.13 THz by using the KTP crystal. The obtained THz pulse energy was 336 nJ at 5.72 THz when the pulse repetition frequency (PRF) was 10 Hz and the pump pulse energy was 80 mJ [11]. In the following years, there were some reports of enhancing the performance of the external cavity-pumped SPS laser using a KTP crystal [12][13][14]. The external cavity-pumped SPS sources are mainly used to generate terahertz pulses with relatively high pulse energy and low pulse repetition rate.Compared with the external cavity-pumped system which requires a high-pulse-energy pumping laser, an intracavity-pumped system, in which the nonlinear crystal is inserted in the fundamental cavity, can take advantage of the high intracavity fundamental power density to enhance nonlinear conversion. Intracavity-pumped SPS sources are usually compact and exhibit relatively low SPS thresholds, high pulse repetition rates, high average THz output powers, and high diode-to-THz conversion efficiencies. The KTP crystal is also used as the nonlinear medium in intracavity-pumped SPS sources. Ortega reported an intracavity-pumped SPS laser using a KTP crystal in his PhD thesis. The diode-end pumped configuration for fundamental gain medium was adopted. The generated average TH...

show abstract

Efficient TEM_00-mode operation of a laser-diode side-pumped Nd:YAG laser

Cited by 34 publications

References 10 publications

LASED: A Laser-Atom Interaction Simulator derived from Quantum Electrodynamics

LASED: A Laser-Atom Interaction Simulator derived from Quantum Electrodynamics

Experimental study of electro-optical Q -switched pulsed Nd:YAG laser

Enhancement of Intracavity-Pumped Terahertz Parametric Oscillator Power by Adopting Diode-Side Pumped Configuration Based on KTiOPO4 Crystal

Contact Info

Product

Resources

About