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Subnanosecond pulse generation from diode-pumped acousto-optically Q-switched solid-state lasers.

H Plaessmann, K S Yamada, C E Rich

|September 22, 2010

Summary

Miniature diode-pumped acousto-optically Q-switched solid-state lasers achieve picosecond pulse durations near 1 µm. These lasers offer high peak powers for various applications.

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Area of Science:

Optics and Photonics
Solid-State Lasers
Acousto-Optic Modulation

Background:

Miniature solid-state lasers are crucial for applications requiring compact and efficient light sources.
Q-switching technology enables the generation of high-energy, short-duration laser pulses.
Acousto-optic modulators provide precise control over laser parameters like pulse duration and repetition rate.

Purpose of the Study:

To investigate the performance of miniature diode-pumped acousto-optically Q-switched solid-state lasers.
To characterize laser output, including pulse duration, peak power, and wavelength.
To explore the capabilities of these lasers for generating ultrashort pulses.

Main Methods:

Utilizing diode-pumped Nd:YVO(4) and Nd:YLF solid-state laser gain media.

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Employing acousto-optic Q-switching for pulsed operation.

Operating lasers at wavelengths around 1 µm and 1.342 µm.

Varying repetition rates from 1 kHz to 100 kHz.

Main Results:

Nd:YVO(4) lasers achieved 600-picosecond (ps) pulses at 1.064 µm with 5-kilowatt (kW) peak power at 1 kHz.
Nd:YLF lasers generated 700-ps pulses at 1.047 µm with 15-kW peak power at 1 kHz.
Pulses ranging from 600 ps to 3.3 ns were produced across different configurations and repetition rates.
Peak powers varied from 0.5 kW to 15 kW depending on the laser medium and operating conditions.

Conclusions:

Miniature diode-pumped acousto-optically Q-switched solid-state lasers are capable of producing ultrashort pulses with high peak powers.
The demonstrated laser systems offer versatile performance characteristics suitable for demanding applications.
These lasers represent a significant advancement in compact, high-performance pulsed laser technology.