Generation of radially polarized optical beam mode by laser oscillation

Mushiake, Y.; Matsumura, Kenji; Nakajima, N.

doi:10.1109/proc.1972.8865

Cited by 125 publications

(55 citation statements)

References 2 publications

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“…57) A conical element that selected a radially polarized (RP) beam was used in a He-Ne laser. 58) Coherent summation inside the Nd:YAG laser resonator of two orthogonally polarized LG 01 modes was used for forming both RP and AP doughnut beams. 63) A conical Brewster prism with a polarization selectivity was used to produce a RP doughnut in diode pumped Nd:YAG laser.…”

Section: Lg Vector Modes Selectionmentioning

confidence: 99%

“…23,24) RP and AP doughnuts and highorder LG vector modes have been actively studied for their capability to generate a strong longitudinal electric field when it is tightly focused and a focal spot smaller than that for a linearly polarized beam. 72,74,76) Methods of cv modes selection in a laser are distinguished usually by the usage of axisymmetric-polarization-selective components: birefringent crystals, 57,66,70,71) Brewster angle conical elements, 58,65) polarization selective mirrors. 24,62,64,68,[72][73][74] Methods of RP and AP modes formation inside and outside the laser cavity and their applications were reviewed by Zhan.…”

Section: Introductionmentioning

confidence: 99%

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Laguerre-Gaussian modes selection in diode-pumped solid-state lasers

Senatsky

Bisson

et al. 2012

OPT REV

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Over the last twenty years, diode pumping of solid-state lasers has opened new prospects for the mode control and formation of Laguerre-Gaussian (LG) beams, enabling a large variety of applications. Experiments on scalar and vector LG modes selection in Nd 3þ -and Yb 3þ -doped ceramics and crystal lasers carried out at the Institute for Laser Science, Tokyo are reviewed. Selection of LG modes from low to high orders using intra-cavity elements, polarization-selective mirrors, or shaping the pump beam profile, is considered. Illustrations of record-high-order LG hollow modes, multiring modes with highly directional propagation properties, characteristics of cw and pulsed lasers with radially or azimuthally polarized beams of high polarization purity are presented. General solutions of the wave equation for the axi-symmetric electric field, which describe LG beams of various profiles, are proposed for data analysis. In parallel, a short review on LG modes selection studies carried out at other laboratories is given.

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Section: Lg Vector Modes Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laguerre-Gaussian modes selection in diode-pumped solid-state lasers

Senatsky

Bisson

et al. 2012

OPT REV

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“…In recent three decades, many methods have been developed in order to generate such radially polarized lights either inside the laser resonator by using various intracavity polarizationselective elements like subwavelength gratings [11][12][13][14][15][16], conical prisms [17,18], and birefringent elements [19] to force the desired oscillation, or outside the laser resonator via interferometer [20] and mode conversion in a few-mode fiber [21] and so on. It is worth mentioning that methods based on subwavelength gratings have greater potential to acquire high-power radially polarization beams with high mode quality and purity.…”

Section: Introductionmentioning

confidence: 99%

Radially polarized, actively Q-switched, and end-pumped Nd:YAG laser

Xia

Ueda

2012

Appl. Phys. B

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In this paper, we demonstrated an actively Q-switched, radially polarized, and laser-diode end-pumped Nd:YAG laser with an acousto-optic modulator as the Q switch and a photonic crystal grating as the output coupler. The laser generated pulses of 26.4-67.2 ns duration, and the repetition rate can be continuously adjusted from 500 Hz to 9.238 kHz with peak power up to 7.75 kW. Such a radially polarized pulse would facilitate numerous applications.

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“…In the extra-cavity approach, the laser output is manipulated through a combination of suitable optical elements [3,5]. In the intra-cavity approach, which has also been utilized in this work, the laser resonator itself is modified in a way that the transverse mode exhibits the desired radial profile [6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Material processing with pulsed radially and azimuthally polarized laser radiation

2006

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We report on the generation of radially and azimuthally polarized Q-switched laser radiation and its application in material processing. The power levels were sufficiently high to study micro-hole drilling in different metals. Depending on the optical properties of the metal, either radial or azimuthal polarization shows the best efficiency and the effect is attributed to waveguiding. For steel, a comparison to linearly or circularly polarized laser radiation indicates that the doughnut-shaped beam with azimuthal polarization is the most energy-efficient in producing holes of the same diameter and depth.

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Generation of radially polarized optical beam mode by laser oscillation

Cited by 125 publications

References 2 publications

Laguerre-Gaussian modes selection in diode-pumped solid-state lasers

Laguerre-Gaussian modes selection in diode-pumped solid-state lasers

Radially polarized, actively Q-switched, and end-pumped Nd:YAG laser

Material processing with pulsed radially and azimuthally polarized laser radiation

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