Rotating Solid Dye Resonator for Thermal Damage Prevention
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Solution Overview
Problem
Conventional solid dye lasers have a short lifespan and low pulse repetition rate due to constant irradiation of pumping light on a fixed position, leading to thermal damage and inefficient energy conversion.
Innovation Solution
A solid dye resonator and handpiece laser design that rotates the solid dye using a driving motor, varying the irradiation position and facilitating disk form construction, allowing controlled rotation based on user-set pulse repetition rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pumping light is continuously irradiated to a fixed position on the solid dye, then the laser can maintain stable oscillation, but the solid dye surface is damaged by heat and the life span becomes short
Solution Approach 1:
The solid dye is rotated during operation so that the pumping light irradiation position is continuously varied. This dynamic rotation prevents heat accumulation at any single fixed position, thereby extending the life span of the solid dye while maintaining stable laser oscillation.
Solution Approach 2:
The solid dye undergoes periodic rotation at controlled speeds, creating a periodic variation in the irradiation position. This periodic action ensures that no single location is continuously exposed to high-intensity pumping light, preventing thermal damage and extending operational life.
2Productivity
If pumping light is continuously irradiated to a fixed position on the solid dye, then the laser can maintain stable oscillation, but the pulse repetition rate is limited due to heat damage
Solution Approach 1:
By rotating the solid dye dynamically, the system enables higher pulse repetition rates without compromising the life span. The rotation ensures that each position on the solid dye receives pumping light only intermittently, allowing faster repetition cycles while preventing cumulative thermal damage.
3Ease of operation
If the solid dye is constructed in a conventional cylindrical form, then the structure is simple, but the rotational control is difficult and the life span is short
Solution Approach 1:
The solid dye is constructed in a disk form rather than a conventional cylindrical form. This disk geometry with a central through-hole provides balanced rotational characteristics, enabling smooth and controlled rotation while maintaining structural simplicity. The disk shape is optically suitable for laser oscillation and mechanically favorable for rotational operation.
4Productivity
If the solid dye is constructed in a conventional cylindrical form, then the structure is simple, but the pulse repetition rate is low due to fixed irradiation position
Solution Approach 1:
The disk-shaped solid dye with central through-hole enables effective rotation for varying the irradiation position, thereby increasing the pulse repetition rate. This geometric modification balances the added structural complexity with significant gains in operational productivity and longevity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly extends the lifespan and increases the pulse repetition rate of the solid dye by preventing continuous irradiation at a single point, reducing thermal damage and improving energy conversion efficiency.
Implementation Method 1
a solid dye 110 (i.e., a laser gain medium) configured to oscillate a laser wavelength by absorbing input pumping light
Implementation Method 2
the high-reflection mirror 121 provided in the first mounting groove 131a of the first mounting plate 131 and configured to transmit the pumping light toward the solid dye 110 and to reflect the light oscillated from the solid dye 110
Implementation Method 3
the output coupler 122 provided in the second mounting groove 132a of the second mounting plate 132 and configured to partially reflect and transmit the light oscillated from the solid dye 110
Data Source
AI summary
The present invention relates to a solid dye resonator, and to a solid dye laser hand piece comprising same. The solid dye resonator comprises: solid dye; a high-reflection mirror; an output coupler; a first mounting plate on which the high-reflection mirror is mounted; a second mounting plate which is spaced apart from the first mounting plate and which has a surface on which the output coupler is mounted; a driving motor mounted on the first mounting plate, such that a motor shaft is directed toward the second mounting plate; and a rotary shaft interposed between the first mounting plate and the second mounting plate, and connected to the motor shaft of the driving motor such that the rotary shaft interlockingly rotates with the rotation of the driving motor.