Optical apparatus and photogenerating method

The optical device uses a birefringent element and control unit to adjust light phases, addressing phase relationship challenges in nonlinear optical media, enabling precise generation of desired wavelength and intensity light.

JP7874973B2Active Publication Date: 2026-06-17HAMAMATSU PHOTONICS KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
HAMAMATSU PHOTONICS KK
Filing Date
2022-01-28
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing optical devices struggle to generate light with desired wavelengths and intensities due to challenges in controlling the phase relationship of light in nonlinear optical media, leading to inefficient wavelength conversion and intensity modulation.

Method used

An optical device comprising a light emission unit, phase adjustment unit, and light generation unit, utilizing a birefringent element and control unit to adjust the phase difference between first and second lights by controlling the temperature and voltage applied to the birefringent element, allowing precise control of light phases before entering a nonlinear optical element.

Benefits of technology

Enables the reliable generation of light with desired wavelengths and intensities by accurately controlling the phase difference between lights, enhancing wavelength conversion efficiency and intensity modulation.

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Abstract

To provide an optical device with which the generation of light having a desired wavelength and desired intensity can be easily and reliably realized.SOLUTION: An optical device 1 comprises a light emission unit 2, a phase adjustment unit 3, and a light generation unit 4. The light emission unit 2 emits first light L1 and second light L2 having mutually different polarization states. The light generation unit 4 generates third light L3 on the basis of the first light L1 and second light L2 the phase difference of which has been adjusted by the phase adjustment unit 3. The first light L1 and second light L2 are entered to a birefringent element 14. A control unit 15 controls the temperature of the birefringent element 14 and / or the voltage applied to the birefringent element 14. The light generation unit 4 includes a nonlinear optical element 17 that generates third light L3 on the basis of the first light L1 and / or the second light L2. The first light L1 and second light L2 emitted from the birefringent element 14 are entered to the nonlinear optical element 17 of the light generation unit 4.SELECTED DRAWING: Figure 1
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