مقالۀ پژوهشی: تولید پالس‌های پرتوان از محیط فعال دیسک نازک Yb:YAG با مدولاتور آکوستو-اپتیک

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه فیزیک مهندسی، دانشگاه صنعتی کرمانشاه، کرمانشاه، ایران

2 دانشیار، گروه فیزیک، دانشگاه تربیت مدرس، تهران، ایران

3 دانش‌آموختۀ دکترا، گروه فیزیک، دانشگاه تربیت مدرس، تهران، ایران

4 دانش‌آموختۀ دکترا، گروه فیزیک مهندسی، دانشگاه صنعتی کرمانشاه، کرمانشاه، ایران

چکیده

در سال­های کنونی محیط­های فعال دیسک نازک امکان ساخت منابع نوری لیزری پالسی و پیوسته با توان متوسط بالا را فراهم کرده­ است. در این پژوهش از روش کلید­زنی-کیو با مدولاتور آکوستو-اپتیک و محیط فعال دیسک نازک Yb: YAG برای تولید پالس­های پرتکرار با توان متوسط بالا در طول موج 1030 نانومتر استفاده شد. مشخصات پالس­های خروجی شامل پهنای زمانی، انرژی تک پالس و توان متوسط در توان دمش­ها و همچنین نرخ تکرارهای مختلف اندازه‌گیری و مورد بررسی قرار ­گرفت. لیزر ساخته شده در محدوده نرخ تکرار 5/0 تا 9 کیلوهرتز به صورت پایدار کار می­کرد. پهنای زمانی پالس­های خروجی با این روش حدود 1 میکروثانیه بودند. پالس خروجی با بیشینه انرژی بالای 50 میلی ژول و همچنین بیشینه توان متوسط خروجی 340 وات از این لیزر به دست آمدند. همچنین نتایج نشان دادند که در توان دمش­های بالا، انرژی پالس­های خروجی حساسیت کمتری به نرخ تکرار دارد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Research Paper: Producing High Average Power Pulses From the Yb:YAG Thin-disk Active Medium with Acousto-optic Modulator

نویسندگان [English]

  • Kaveh Pasandideh 1
  • Ahmad Moshaii 2
  • Saeid Radmard 3
  • Tahereh Namdari 4
1 Assistant Professor, Department of Engineering Physics, Kermanshah University of Technology, Kermanshah, Iran.
2 Associate Professor, Department of Physics, Tarbiat Modares University, Tehran, Iran.
3 PhD Graduated, Department of Physics, Tarbiat Modares University, Tehran, Iran
4 PhD Graduated, Department of Engineering Physics, Kermanshah University of Technology, Kermanshah, Iran.
چکیده [English]

In recent years, thin-disk active media geometry has facilitated the development of pulsed and continuous laser sources with extremely high output powers. In this study, the technique of Q-switching utilizing an acousto-optic modulator and a Yb: YAG thin-disk active medium was employed to produce high average power and high repetition rate pulses at a wavelength of 1030 nm. The characteristics of output pulses, including time duration, single pulse energy, and average power were measured and analyzed at different pump levels and repetition rates. Depending on the pump level, the fabricated laser operated stably in the repetition range from 0.5 to 9 kHz. The time duration of the output pulses using this approach was approximately one microsecond. Moreover, the output pulse with the maximum energy above 50 mJ and also the maximum average output power of 340 watts was obtained from this laser. Also, the findings indicated that the repetition rate does not significantly affect the output pulse energy at higher pump powers.

کلیدواژه‌ها [English]

  • Thin Disk
  • Acousto-optic Modulator
  • Average Power
  • Repetition Rate

مراجع

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  • تاریخ دریافت: 26 اسفند 1402
  • تاریخ بازنگری: 19 خرداد 1403
  • تاریخ پذیرش: 28 شهریور 1403

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