Sub-watts 355 nm generation with 2nd– and 3rd-order-QPM PPMgSLT

Hirohashi, Junji; Imai, Koichi; Motegi, Hiroshi; Tomihari, Yasuhiro; Fukui, Taro; Furukawa, Yasunori

doi:10.1364/cleo.2010.cmg4

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Recently, a new nonlinear crystal MgO:PPSLT is attached to importance owing to its intrinsic advantages including high thermal conductivity, high photo-refractive damage as well as broad transmission wavelength range and has been successfully used to generate green and yellow lasers [6][7][8][9]. Some groups also used MgO:PPSLT crystals to generate UV laser, but the powers were all at low level [10,11]. Recently, our group generated 407 mW continuous-wave (CW) single-frequency 397.5 nm UV laser with long lifetime and perfect beam quality by using a MgO:PPSLT crystal in an external enhancement cavity.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the thermal characteristic of MgO:PPSLT crystal by transmission spectrum of a swept cavity

Jiao

Jin

et al. 2017

Opt. Express

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A method of evaluating the thermal focal length of nonlinear crystal via transmission spectrum of a swept cavity (TSSC) is presented. By recording the resonant point offset of the TSSC, the thermal focal length can be successfully measured. Furtherly, by distinguishing the absorption of ultraviolet (UV) laser and UV laser induced infrared absorption (ULIIRA), it is clear that the ULIIRA is the important factor which induces the thermal lens effect compared to the absorption of UV laser for MgO-doped periodically poled stoichiometric lithium tantalate (MgO:PPSLT) crystal and it becomes serious with the increase of the generated UV laser. The ULIIRA coefficient measurement and thermal focal length evalution of MgO:PPSLT crystal can supply an useful reference for researchers to generate high quality UV laser and squeezed or entangled state of optical field by using MgO:PPSLT crystal. The presented method can also be used to precisely evaluate the thermal focal length of other nonlinear crystals.

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Section: Introductionmentioning

confidence: 99%

Investigation on the thermal characteristic of MgO:PPSLT crystal by transmission spectrum of a swept cavity

Jiao

Jin

et al. 2017

Opt. Express

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“…In 2009, Ricciardi et al realized a 7 mW 355 nm laser in PPSLT crystal [15]. Later, Hirobashi et al obtained 0.7 W 355 nm pulse laser [16].…”

Section: Introductionmentioning

confidence: 99%

Generation of high-power single-frequency 3975 nm laser with long lifetime and perfect beam quality in an external enhancement-cavity with MgO-doped PPSLT

Jiao

Wei

et al. 2016

Opt. Express

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Continuous-wave single-frequency high power 397.5 nm laser with long lifetime and perfect beam quality is one of the essential resource to generate the squeezed and entanglement states of optical beams resonant with D₁ line of Rubidium atoms at 795 nm. In this paper, We present the experimental generation of single-frequency high power 397.5 nm ultra-violet (UV) laser with long lifetime and perfect beam quality by using periodically poled MgO-doped stoichiometric lithium tantalate (MgO:PPSLT) crystal as the frequency doubler in an external enhancement ring cavity. When the transmission of the input coupler is 5.5%, the maximal output power of single-frequency 397.5 nm UV laser of 407 mW is obtained under the incident pump power of 1.9 W with the corresponding conversion efficiency of 22.8%. When the output power is 290 mW, the measured power stability and the beam quality are lower than 0.28% and 1.02, respectively. Moreover, any damage is not observed in our experiment which lasts about 1 year.

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Sub-watts 355 nm generation with 2nd– and 3rd-order-QPM PPMgSLT

Cited by 2 publications

References 2 publications

Investigation on the thermal characteristic of MgO:PPSLT crystal by transmission spectrum of a swept cavity

Investigation on the thermal characteristic of MgO:PPSLT crystal by transmission spectrum of a swept cavity

Generation of high-power single-frequency 3975 nm laser with long lifetime and perfect beam quality in an external enhancement-cavity with MgO-doped PPSLT

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