34  mJ Ho:YAG ceramic master oscillator and power amplifier laser at 2097  nm

Li, Yan; Zhang, Yixuan; Na, Quanxin; Gao, Chunqing; Gao, Mingwei; Wang, Qing; Zhang, Jian

doi:10.1364/ao.55.002853

Appl. Opt.

2016

DOI: 10.1364/ao.55.002853

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34 mJ Ho:YAG ceramic master oscillator and power amplifier laser at 2097 nm

Yan Li

Yixuan Zhang

Quanxin Na

et al.

Abstract: We demonstrated a 2097 nm Ho:YAG ceramic master oscillator and power amplifier system pumped by Tm:YLF lasers. Laser characteristics of 0.6 at.% and 0.4 at.% Ho:YAG ceramics were studied in CW and Q-switched modes. An output energy of 20.6 mJ at a pulse repetition frequency of 200 Hz was achieved from the master oscillator. The pulse energy was amplified to 34 mJ by the Ho:YAG ceramic amplifier with a pulse duration of 54 ns.

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“…7) In contrast, single doped Ho 3+ media could be directly excited by readily available 1.9 µm pump sources, showing more advantages in generating higher power laser pulses. 3,8) For example, Strauss et al demonstrated an output with a pulse energy of 200 mJ and repetition rate of 50 Hz by using a Ho:YLF and Ho:LuLF slab amplifier system. 9) Ho:YAG crystal is another excellent material for 2 µm lasers due to its good thermo-mechanical properties and crystal quality.…”

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Single-frequency injection-seeded Q-switched Ho:YAG laser

Wang¹,

Gao²,

Na³

et al. 2017

Appl. Phys. Express

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An injection-seeded Ho:YAG laser at 2090 nm with changeable pulse repetition frequency (PRF) is demonstrated. Containing a Ho:YAG nonplanar ring oscillator (NPRO) seed, a slave laser, and a single-pass amplifier, the laser delivered single-frequency pulses with energy ranging from 31.4 to 12.7 mJ. The corresponding pulse duration and PRF varied between 102–215 ns and 150–750 Hz, respectively. To the best of our knowledge, this is the highest PRF ever obtained from a single-frequency Ho:YAG laser.

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confidence: 99%

Single-frequency injection-seeded Q-switched Ho:YAG laser

Wang¹,

Gao²,

Na³

et al. 2017

Appl. Phys. Express

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Conversion of blue light to near infrared emission by Y₃Al₅O12: Ce3+, Er3+, Ho3+

Xiao

Yang

Xiao

2018

Funct. Mater. Lett.

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Ho[Formula: see text] single-doped, Ce[Formula: see text]/Ho[Formula: see text] co-doped and Ce[Formula: see text]/Er[Formula: see text]/Ho[Formula: see text] tri-doped Y3Al5O[Formula: see text] (YAG) near infrared (NIR) phosphors were prepared by coprecipitation-melted salt method. The 2090[Formula: see text]nm emission of Ho[Formula: see text] is improved by 2 times in Ce[Formula: see text]/Er[Formula: see text]/Ho[Formula: see text] tri-doped YAG phosphor and by 0.5 times in Ce[Formula: see text]/Ho[Formula: see text] co-doped YAG phosphor, compared with that in Ho[Formula: see text] single-doped YAG phosphor. The improved luminescence at 2090[Formula: see text]nm in Ce[Formula: see text]/Er[Formula: see text]/Ho[Formula: see text] tri-doped YAG phosphor is performed by the Ce[Formula: see text] indirect sensitization. It is estimated that the Ce[Formula: see text] indirect sensitization efficiency is about 64% in the Y[Formula: see text]Al5O[Formula: see text]:0.06Ce, 0.15Er, 0.14Ho sample.

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Single-frequency, injection-seeded Q-switched Ho:YAG ceramic laser pumped by a 191μm fiber-coupled LD

et al. 2016

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A 2090 nm injection-seeded Q-switched Ho:YAG ceramic laser pumped by a 1.91 μm fiber-coupled LD is demonstrated in this paper. Single-frequency operation of Q-switched Ho:YAG ceramic laser is achieved by injection seeding technique. The maximum output energy of the single-frequency Q-switched Ho:YAG ceramic laser is 14.76 mJ, with a pulse width of 121.6 ns and a repetition rate of 200 Hz. The half-width of the pulse spectrum measured by heterodyne technique is 3.84 MHz. The fluctuation of the center frequency of the pulsed laser is 1.49 MHz (RMS) in 1 hour. As far as we know, this is the first time to report a single-frequency, injection-seeded Ho:YAG ceramic pulsed laser.

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34 mJ Ho:YAG ceramic master oscillator and power amplifier laser at 2097 nm

Cited by 3 publications

References 15 publications

Single-frequency injection-seeded Q-switched Ho:YAG laser

Single-frequency injection-seeded Q-switched Ho:YAG laser

Conversion of blue light to near infrared emission by Y₃Al₅O12: Ce3+, Er3+, Ho3+

Single-frequency, injection-seeded Q-switched Ho:YAG ceramic laser pumped by a 191μm fiber-coupled LD

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34 mJ Ho:YAG ceramic master oscillator and power amplifier laser at 2097 nm

Cited by 3 publications

References 15 publications

Single-frequency injection-seeded Q-switched Ho:YAG laser

Single-frequency injection-seeded Q-switched Ho:YAG laser

Conversion of blue light to near infrared emission by Y3Al5O12: Ce3+, Er3+, Ho3+

Single-frequency, injection-seeded Q-switched Ho:YAG ceramic laser pumped by a 191μm fiber-coupled LD

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Product

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Conversion of blue light to near infrared emission by Y₃Al₅O12: Ce3+, Er3+, Ho3+