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Repetitively pulsed, tunable ruby laser with solid etalon mode control.

¹Physics Department, Stanford University,Stanford, California 94305, USA.

|January 12, 2010

Summary

A new tunable ruby laser offers high-resolution spectroscopy and photochemical excitation. Its frequency is precisely controlled by temperature, ensuring stable, narrow linewidths for advanced laser applications.

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Area of Science:

Laser physics
Spectroscopy
Photochemistry

Background:

Development of tunable laser sources is crucial for high-resolution spectroscopy.
Selective photochemical excitation requires lasers with precise frequency control.

Purpose of the Study:

To design and construct a repetitively pulsed, tunable ruby laser.
To utilize this laser as a light source for high-resolution absorption spectroscopy and selective photochemical excitation.

Main Methods:

Frequency tuning achieved by altering ruby temperature over ~20 cm(-1) range.
Mode control implemented using a solid sapphire etalon for stability.
Laser operated at repetition rates up to 2 pulses/sec with 0.5 J/pulse output energy.

Main Results:

Achieved linewidth and stability within 0.04 cm(-1) over >25,000 pulses.
Demonstrated a tunable ruby laser suitable for demanding spectroscopic applications.
Presented design and performance characteristics of the developed laser system.

Conclusions:

The designed ruby laser meets requirements for high-resolution spectroscopy and photochemical applications.
The laser's stability and tunability make it a valuable tool in scientific research.
Further applications of this laser technology can be explored in various scientific fields.

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