Self-
<i>Q</i>
-switch regime based on a beat effect with a dual-frequency microchip laser

Zhang, Zilong; Gui, Kun; Zhao, Changming; Zhang, Haiyang; Siqi, Chen; Zhou, Guocheng

doi:10.1103/physreva.98.033831

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…The experimental setup is shown in Fig. 1, in which the DMML is the same with that in one of our former papers [18]. The DMML is composed of a 400 μm thick Nd:YAG chip with 1 at.% doping concentration and a 1 mm thick a-cut LiTaO 3 (LTO 3 ) chip.…”

Section: Methodsmentioning

confidence: 99%

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Generation and Thermal Properties of a Dual-Transverse-Mode With Dual-Polarization and Dual-Frequency by a Dual-Medium Microchip Laser

et al. 2019

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A dual-polarization, dual-frequency and dual-transvers-mode laser beam is generated by a dual-medium microchip laser. The dual-transvers-mode includes a linearly polarized LG 01 mode and a perpendicular polarized TEM 00 mode, which have different optical frequencies. How is the beat frequency of the dual-mode influenced by the thermal factors, including cooling temperature of birefringent crystal and thermal effect of gain medium, is experimentally investigated and theoretically analyzed. These studies offer an extension and better understanding of the dual-medium based dual-frequency laser, which is of important applications in coherent Lidar detection and optical communications.

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Section: Methodsmentioning

confidence: 99%

“…The structure of DMML (a) (Ref. [18], Fig 1(a)) and experimental setup (b). In (b), DMML is the dual-material microchip laser, M1 is a 45-degree dichroic mirror with high reflection at 1064 nm and high transmission around 800 nm, M2 and M3 are both 45-degree 1:1 beam splitters at 1064 nm, and L1 is a focused lens.…”

Section: Introductionmentioning

confidence: 99%

Generation and Thermal Properties of a Dual-Transverse-Mode With Dual-Polarization and Dual-Frequency by a Dual-Medium Microchip Laser

et al. 2019

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“…Different wavelengths and beam patterns can be obtained for the two different polarizations. 44,45 So type-I phase matching is used for the SHG process. As LTO crystal is a positive uniaxial crystal, two e-polarized 1064 nm fundamental photons will generate one second harmonic 532 nm photon.…”

Section: Experimental Setupsmentioning

confidence: 99%

Second harmonic generation of laser beams in transverse mode locking states

Zhang

Gao

et al. 2022

Adv. Photon.

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Nonlinear frequency conversion of structured beams has been of great interest recently. We present an intracavity second harmonic generation (SHG) of laser beams in transverse mode locking (TML) states with a specially designed sandwich such as a microchip laser. The intracavity nonlinear frequency conversion process of a laser beam in a TML state to its second harmonic is theoretically and experimentally investigated, considering different relative phase and weight parameters between the basic modes in the TML beam. Comparison between the far-field SHG beam patterns of fundamental frequency transverse modes in coherently locked and incoherently superposed states demonstrates that the SHG of TML beams can carry more information. Various rarely observed far-field SHG beam patterns are obtained, and they are consistent with the theoretical analysis and numerical simulations. With the obtained SHG beams, the characteristics of the structured fundamental frequency beams can also be conversely investigated or predicted. This work may have important applications in optical 3D printing, optical trapping of particles, and free-space optical communication areas.

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“…Frequency difference tunable dual-frequency lasers have drawn a lot of attention in the last few years for their applications in the fields of absolute distance interferometry, Light Detection and Ranging (LIDAR) detection and terahertz wave generation [1][2][3]. In recent years, significant achievements have been made in the research of dual-frequency lasers, such as the intensity balance ratio, beat note stability and beat effect-based Q-switch regime [4][5][6]. These achievements have led to dual-frequency laser technology with a complete system and rich connotation.…”

Section: Introductionmentioning

confidence: 99%

Frequency Difference Thermally and Electrically Tunable Dual-Frequency Nd:YAG/LiTaO3 Microchip Laser

et al. 2019

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This study presents a dual-frequency microchip laser with a thermo-optically and electro-optically tuned frequency difference. The dual-frequency microchip cavity is formed by bonding a Lithium tantalite (LiTaO3, LTO) crystal chip and a neodymium-doped yttrium aluminum garnet (Nd:YAG) crystal chip. A single longitudinal mode is generated by the Nd:YAG crystal and split into two frequencies with perpendicular polarizations due to birefringent effect in the LTO chip. Furthermore, continuous beat frequency tuning at different scales is realized by adjusting the temperature and voltage applied to the LTO crystal. A maximum beat frequency of up to 27 GHz is obtained, and the frequency difference lock-in phenomenon is observed below the frequency difference of 405 MHz.

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Self- Q -switch regime based on a beat effect with a dual-frequency microchip laser

Cited by 4 publications

References 20 publications

Generation and Thermal Properties of a Dual-Transverse-Mode With Dual-Polarization and Dual-Frequency by a Dual-Medium Microchip Laser

Generation and Thermal Properties of a Dual-Transverse-Mode With Dual-Polarization and Dual-Frequency by a Dual-Medium Microchip Laser

Second harmonic generation of laser beams in transverse mode locking states

Frequency Difference Thermally and Electrically Tunable Dual-Frequency Nd:YAG/LiTaO3 Microchip Laser

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