䝣䜷䝖䝸䝣䝷䜽䝔䜱䝤⤖ᬗ䜢⏝䛔䜛䝩䝻䜾䝷䝮グ㘓 ᮾி⌮⛉኱Ꮫᛂ⏝≀⌮Ꮫ⛉ඖᩍᤵ⌮໬Ꮫ◊✲ᡤග㔞Ꮚไᚚᢏ⾡㛤Ⓨࢳ࣮࣒◊✲კク▼஭⾜ᘯ ISHII, Yukihiroගᢏ⾡ࢥࣥࢱࢡࢺㄅ 59 ᕳ 2 ྕㄅ(2021)࡟࣍ࣟࢢ࣒࣓࣮ࣛࣔࣜࡢ≉㞟グ஦ࡀ࠶ࡾࡲࡋࡓࠋࡑࡢグ஦࡛㸪࣍ࣟࢢ࣒ࣛグ㘓ࡣ㧗ឤᗘ࡛Ᏻᐃ࡞ࣇ࢛ࢺ࣏࣐࣮ࣜࡀ⏝࠸ࡽࢀ࡚࠸ࡿࠋᮏ↔Ⅼḍࢆ฼⏝ࡋ࡚㸪࣓࣮ࣔࣜ࡟ᛂ⏝࡛ࡁࡿࣇ࢛ࢺࣜࣇࣛࢡࢸ࢕ࣈ㸦PR㸧⤖ᬗ࡛࠶ࡿࢽ࢜ࣈ㓟ࣜࢳ࣒࢘㸦LN㸧ࢆ⏝࠸ࡿ࣍ࣟࢢ࣒ࣛグ㘓෌⏕㐣⛬ࢆ⤂௓ࡋࡓ࠸࡜ᛮ࠸ࡲࡍࠋᐇ㦂ࢹ࣮ࢱࡢฟ඾ࢆ♧ࡍㄽᩥࡣ㸪Y. Komori and Y. Ishii:
Proc. SPIE 7781, 1-7, 2010 ࡛࠶ࡿࠋPR ຠᯝࡣ㸪୙⣧≀࡟㉳ᅉࡍࡿ῝࠸ࢺࣛࢵࣉ‽఩ࢆ᭷ࡍࡿ㟁ẼගᏛ⤖ᬗ࡟࣮ࣞࢨ࣮ගࢆ↷ᑕࡋ࢖࢜ࣥ໬ࡉࢀ⏕ᡂࡉࢀࡓ⮬⏤㟁Ꮚࡀ㸪ᣑᩓ㸪እ㒊㟁⏺㸪ග㉳㟁ຊຠᯝ࡟ࡼࡾ⛣ືࡋࡓࡢࡕ㸪୙⣧≀࢔ࢡࢭࣉࢱ࣮‽఩࡟ࢺࣛࢵࣉࡉࢀ෌⤖ྜࡍࡿࠋࡑࡢ⤖ᯝ㸪࣍ࣟࢢ࣒ࣛᖸ΅⦤ᙉᗘศᕸ࡟ᑐᛂࡋࡓ㟁Ꮚ⃰ᗘࡢṇᘻἼ≧ࡢศᕸࡀ⏕ࡎࡿࠋࡇࡢ㟁Ꮚ⃰ᗘศᕸ࡟ࡼࡾ⏕ࡎࡿ㟁⏺࡟ẚ౛ࡋࡓᒅᢡ⋡ศᕸࡀ⌧ࢃࢀ㸪఩┦ᆺ࣍ࣟࢢ࣒ࣛ࡜ࡋ࡚グ㘓ࡉࢀࡿࠋཌ࠸ LN ⤖ᬗ࡟ࡼࡾయ✚ᆺࡢグ㘓ࡀྍ⬟࡜࡞ࡾ㸪㗦࠸ゅᗘ㸪Ἴ㛗㑅ᢥᛶࢆ♧ࡋከࡃࡢ࣮࣌ࢪ㸦⏬ീ㸧ࡀグ㘓ࡉࢀࡿࠋᅗ 1 ࡣ㸪࣍ࣟࢢ࣒ࣛグ㘓࡟⏝࠸ࡓ Fe, Mn ࢆࢻ࣮ࣉࡋࡓ LN ⤖ᬗ㸦LiNbO3:Fe:Mn㸧ࡢ࢚ࢿࣝࢠ࣮ࣂࣥࢻᅗ࡛࠶ࡿࠋ㟷ࡢ 405 nm ࡢ࣮ࣞࢨ࣮ග࡟྾཰ࡉࢀࡿ῝࠸‽఩ࡢ Mn ࡜⥳ࡢ 532 nm ࡢ࣮ࣞࢨ࣮
ග࡟྾཰ࡉࢀࡿὸ࠸‽఩ࡢ Fe ࡢ୙⣧≀ࢆࡶࡘ LN ⤖ᬗ࡛㸪2 Ⰽ᭩ࡁ㎸ࡳἲ࡟ࡼࡿ୙᥹Ⓨᛶࡢ࣍ࣟࢢ࣒ࣛグ㘓ࡀ࡛ࡁࡿ⤖ᬗ࡛࠶ࡿࠋࡇࡢ 2 ✀㢮ࡢ῝ࡉࡢ␗࡞ࡿ‽఩ࢆ౑⏝ࡋ࡚㸪2 Ⰽ࣮ࣞࢨ࣮ග࡟ࡼࡿἑᒣ
ࡢ⏬ീࡢゅᗘከ㔜࣍ࣟࢢ࣒ࣛグ㘓ࢆ⾜࠸㸪෌⏕ග࡜ࡋ࡚ࡇࢀࡽࡢ 2 Ⰽ࣮ࣞࢨ࣮ගࢆ⏝࠸㸪ゅᗘከ㔜ࡉࢀࡓ࣍ࣟࢢ࣒ࣛ࠿ࡽࡢࢡࣟࢫࢺ࣮ࢡࡢ࡞࠸෌⏕ീࢆ♧ࡍࠋࡇࡢሙྜ㸪୙᥹Ⓨᛶࡢ≉ᛶࡣ࡞࠸ࠋ
ᅗ 1 ࡢ 2 ✀㢮ࡢ୙⣧≀‽఩ࡢ྾཰Ἴ㛗࡛ගບ㉳ࡉࢀࡓ㟁Ꮚࡣ㸪㟁Ꮚᐦᗘࡢ㧗࠸ᖸ΅⦤ࡢ᫂ࡿ࠸㒊ศ࠿ࡽ୧ഃ࡟࠶ࡿ㟁Ꮚᐦᗘࡢప࠸ᬯࡢ㒊ศ࡬ᣑᩓ⌧㇟࡜ࡋ࡚ὶࢀࡿࠋ᫂㒊࡟ṇ㟁Ⲵ㸪ᬯ㒊࡟㈇㟁Ⲵࡀ⏕ࡌࡑࢀ࡟ࡼࡿ✵㛫㟁⏺࡟ࡼࡿ㟁ὶ࡜ᣑᩓ㟁ὶࡀ஫࠸࡟཯ᑐ᪉ྥ࡟ὶࢀ㸪㟁Ꮚࡢ⛣ືࡀṆࡳᐃᖖ≧ែ࡜࡞ࡿࠋ⦤ࡢ᫂㒊࡜ᬯ㒊ࡢ୰㛫㒊࡛㟁Ẽ㟁⏺ࡀ᭱኱࡜࡞
ࡾ㸪㟁⏺࡟ẚ౛ࡋࡓᒅᢡ⋡᱁Ꮚࡀᙧᡂࡉࢀࡿࠋࡼࡗ࡚ᒅᢡ⋡᱁Ꮚࡣ㟢ගᖸ΅⦤࡜ 90rࡢ఩┦ࡎࢀࡀ⏕ࡌ࡚࠸ࡿࠋᒅᢡ⋡᱁Ꮚࡢ᱁Ꮚ㛫㝸ࡣ㸪ᖸ΅⦤ࡢᬯ㒊࡟ὶࢀ㎸ࡴ㟁Ꮚࢆࢺࣛࢵࣉࡍࡿ࢔ࢡࢭࣉࢱ࣮ᐦᗘࡢ୕
஌᰿࡛୚࠼ࡽࢀ 0.1㹼1ȣm ࡜࡞ࡾ㸪᭱኱ࡢᖸ΅⦤✵㛫࿘Ἴᩘࢆせồࡍࡿయ✚ᆺ࣍ࣟࢢ࣒ࣛࡢグ㘓ࡀྍ⬟࡜࡞ࡿࠋಙྕග࡜ཧ↷ගࢆ PR ⤖ᬗ࡟ྠ᫬↷ᑕࡍࡿ 2 ගἼΰྜࡢᐇ㦂ࢆ⾜࠸㸪⤖ᬗࡢୖ㒊࠿ࡽぢ࡚࠸ࡿ࡜㸪ᩘศࡢグ㘓᫬ᐃᩘ࡛㸪ಙྕගࡢᅇᢡගᙉᗘࡀཧ↷ගࡢᅗ 1 LN ⤖ᬗࡢ࢚ࢿࣝࢠ࣮ࣂࣥࢻᅗ

Vol. 59
No. 55 (2021)( 2021 )59,, No.

－– 1－–࢚ࢿࣝࢠ࣮ࢆཷࡅྲྀࡾᙉࡃ࡞ࡿࡇ࡜ࡀぢ࡚ྲྀࢀࡿࠋࡇࡢ⌧㇟ࡣ㸪2 ග᮰ᖸ΅⦤࠿ࡽ 90rࡢ఩┦ࡀࡎࢀࡓᒅᢡ⋡᱁Ꮚࡢ᱁Ꮚ࣋ࢡࢺࣝ᪉ྥ࡟ᒅᢡ⋡໙㓄ࡀ⏕ࡌ࡚࠾ࡾ㸪໙㓄ࡢ኱ࡁ࠸᪉ྥ࡟ཧ↷ග࠿ࡽගࡀ⛣ືࡋಙྕගࡢ࢚ࢿࣝࢠ࣮ࡀቑᖜࡉࢀࡿࠋࡇࡢ 2 ගἼΰྜࡢቑᖜ≉ᛶࡣ㸪ࢺࣥࢿࣝቨ㠃ࡢᡴ㡢᳨ᰝࡢ௦21
ࢃࡾ࡟ 2 ගἼΰྜࢆ⏝࠸ࡿ࣮ࣞࢨ࣮㉸㡢Ἴィ ἲ࡟⏝࠸ࡽࢀ࡚࠾ࡾ㸪㉸㡢Ἴ࿘Ἴᩘ࡟ᛂ⟅ࡋᒅᢡ⋡᱁Ꮚࢆ㧗㏿࡟᭩ࡁ᥮࠼ࡽࢀࡿᙉㄏ㟁ᛶᾮᬗ(T. Sasaki and Y. Naka, Opt. Rev., 21, 99-109, 2014)ࡀ PR⤖ᬗ࡜ࡋ࡚฼⏝ࡉࢀ࡚࠸ࡿࠋᣑᩓ௨እ࡟㟁Ꮚࡣእ㒊㟁⏺࡜ග㉳㟁ຊຠᯝ࡟ࡼࡾ⛣ືࡍࡿࠋLN ⤖ᬗࡣ㸪እ㒊㟁⏺ࢆ⏝࠸ࡎࢻࣜࣇ
ࢺ㟁⏺ࡣ⏕ࡌ࡞࠸ࡢ࡛㸪ග㉳㟁ຊຠᯝ࡟ࡼࡿ㟁ὶࢆ⪃࠼ࡿᚲせࡀ࠶ࡿࠋLN ⤖ᬗࡣ㸪⤖ᬗᵓ㐀࠿ࡽ཯ീᑐ⛠ᛶࢆ᭷ࡉ࡞࠸⤖ᬗ࡛࠶ࡾ㸪3 㝵ࡢග㉳㟁ຊಀᩘࢸࣥࢯࣝEijk ࡀ࠶ࡾග㉳㟁ຊຠᯝ࡟ࡼࡿ㟁ὶࡀ⏕ࡎࡿࠋi ᪉ྥࡢ㟁ὶᐦᗘ(Jph)i ࡣ(Jph)i=EijkEjEk*࡜᭩ࡅࡿࠋEjEk*ࡣ೫ගࡀྠ୍᪉ྥ࡞ࡽගᙉᗘࢆ⾲ࡋ㸪⤖ᬗ୰ࡢ㟁ὶࡣᖸ΅⦤ᙉᗘศᕸ࡟ẚ౛ࡍࡿࡇ࡜࡟࡞ࡿࠋࡇࡇ࡛㸪Ek*ࡣග㟁⏺ࡢ」⣲ඹᙺࢆ⾲ࡍࠋ㟁ὶᐦᗘ(Jph)i ࡣ㸪ග㟁⏺ࡢ᪉ྥ࡛࠶ࡿ೫ග࡟౫Ꮡࡋ࡚ i ᪉ྥ㸦⤖ᬗࡢ c ㍈᪉ྥ࡟࡜ࡿ㸧࡟ὶࢀࡿࠋ㟁ὶࡣ⤖ᬗࡢఏᑟ⋡ࢆ௓ࡋ࡚㟁Ẽ㟁⏺࡟ኚ᥮ࡉࢀ㸪࣏ࢵࢣࣝࢫຠᯝ࡟ࡼࡾᒅᢡ⋡ศᕸࡀ⏕ࡎࡿࠋLN ⤖ᬗࡢ c ㍈᪉ྥ࡜᱁Ꮚ࣋ࢡࢺࣝࡀᖹ⾜࡞ሙྜ㸪ᒅᢡ⋡ኚ໬㔞ࡣ࣍ࣟࢢ࣒ࣛᖸ΅⦤ࡢྍどᗘ࡟ẚ౛ࡍࡿࡇ࡜࠿ࡽ㸪≀యග࡜ཧ↷ගࡢ஺ᕪゅ࡟౫Ꮡࡏࡎ㧗࠸ྍどᗘࡀᚓࡽࢀࡿ s ೫ග࡛ࡢ࣍ࣟࢢ࣒ࣛグ㘓ࡀ່ࡵࡽࢀࡿࠋࡋ࠿ࡋ㸪ᐇ㦂࡛ࡣ p ೫ග࡛グ㘓ࡋ㸪p ೫ග࡛෌⏕ࡋࡓ࡯࠺ࡀ㧗࠸ᅇᢡຠ⋡ࡀᚓࡽࢀ࡚࠸ࡿࠋ೫ග࡟౫Ꮡࡋ࡚Ⓨ⌧ࡍࡿග㉳㟁ຊຠᯝࢆ⪃៖ࡍࡿᚲせࡀ࠶ࡿࠋእ㒊㟁⏺࡟ࡼࡿࢻࣜࣇࢺ㟁ὶ࡜ග㉳㟁ຊຠᯝ
Green࡟ࡼࡿ㟁ὶࡣ㸪c ㍈᪉ྥ࡟ἢࡗ୍࡚᪉ྥ࡟ὶࢀ
ࡿࡢ࡛㸪ᒅᢡ⋡᱁Ꮚࡢ఩┦ࡎࢀࡣ⏕ࡌ࡞࠸ࠋࡓ
࡜࠼ࡤ Bi12TiO20㸦BTO㸧⤖ᬗࡣ㸪ࢻࣜࣇࢺ㟁ὶࡢຠᯝࡀᨭ㓄ⓗ࡛㸪2 ගἼΰྜࡢቑᖜ⋡ࢆቑຍࡉࡏࡓ࠸ሙྜ㸪ᣑᩓ㟁ὶࡢ᣺ࡿ⯙࠸ࢆᶍࡍࡓ
ࡵ㸪஺ὶ㟁ᅽ㸦5 KV, 33Hz㸧ࢆ BTO ⤖ᬗ࡟༳ຍࡋ㟁Ꮚࢆ㧗㏿࡟ᖸ΅⦤᭱኱఩⨨࠿ࡽ୧ഃ࡟ື
14࠿ࡋ㸪2 ගἼΰྜࡢಙྕගࡢቑᖜస⏝ࢆᐇ⌧ࡍ

Littrow –typeBlue LD(405nm)

EC-LD

LiNbO3:Fe:Mn
EC-LD
LiNbO
3:Fe:Mn
CCDCCDf5M

ISO
FR
M

L5 LN

M
L4L5f LN

P

5f5ff45Computer

L4f4

P

BS
L2S
L3S

Computer

SLM L2L3f4

OL
PH
FR
L1HM
OL
PH
L1P
HM

BSf4

ࡿ ࠋ (A. Kamshilin et al., JOSA B. 14,52331-2338,
1997; R. Onodera et al., Opt. Rev.,

ISO

M
MCa
mera
Ca
mera

Littrow –typeBlue LD(405nm)

M

Laser
(532nm)Green
Laser(532nm)

SLM

ND

ND

MP

S

S
FR

FR

M

HOLOEYEM

Mᅗ 2 LN ⤖ᬗࢆ⏝࠸ࡿ 2 Ⰽ࣍ࣟࢢ࣒ࣛᅗ 2 グ㘓෌⏕ගᏛ⣔LN ⤖ᬗࢆ⏝࠸ࡿ 2 Ⰽ࣍ࣟࢢ࣒ࣛ
HOLOEYE5, 105-108, 1998)
ᅗ 2 ࡣ㸪㟷Ⰽ࣮ࣞࢨ࣮ࢲ࢖࣮࢜ࢻ࡜ࢢ࣮ࣜࣥグ㘓෌⏕ගᏛ⣔࣮ࣞࢨ࣮࡟ࡼࡿ 2 ✀㢮ࡢ࣍ࣟࢢ࣒ࣛࡢグ㘓෌⏕ගᏛ⣔ࢆ♧ࡍࠋ༢୍Ἴ㛗ࡢグ㘓࡟ẚ࡭ 2 ಸࡢグ㘓ᐜ㔞࡜࡞ࡿࠋ2 ✀㢮ࡢ㟢ග᫬㛫࡟ᑐࡍࡿᅇᢡຠ⋡ࡢ㟢ගࢫࢣࢪ࣮ࣗࣝ᭤⥺࡟ᚑ࠸グ㘓ࢆ⾜࠺ࠋ㟷ࡢ࣮ࣞࢨ࣮ࡢ㟢ගࢫࢣࢪ࣮ࣗࣝ࡟ᚑ࠸㸪≀యࡢ⾲♧⿦⨨ࡢ SLM ࡟₎Ꮠࠕ♲ࠖࢆ⾲♧ࡋཧ↷ග࡜࡞ࡍゅᗘ 30°ࡢ㓄⨨࡛グ㘓ࡍࡿࠋḟ࡟⥳ࡢ࣮ࣞࢨ࣮ࡢ㟢ගࢫࢣࢪ࣮ࣗࣝ࡟ᚑ࠸㸪⥳ࡢ࣮ࣞࢨ࣮ࢆ⏝࠸ḟࡢ≀యࠕᅬࠖࢆグ㘓ࡍࡿࠋࡑࡢᚋ㸪࣍ࣟࢢ࣒ࣛࢆ 0.8rᅇ㌿ࡋ࡚㸪ࡇࡢ㟢ගࢫࢣࢪ࣮ࣗࣝࢆ⧞ࡾ㏉ࡍࠋゅᗘ 11.2r࡛ 15 ᅇ⧞ࡾ㏉ࡋࡓࡢࡕ㟢ගࢫࢣࢪ࣮ࣗࣝࡣ⤊஢ࡋࡓࠋᅗ 3 ࡣ㸪0.8rࡎࡘ࣍ࣟࢢ࣒ࣛࢆᅇ㌿ࡋ㟷࡜⥳ࡢ࣮ࣞࢨ࣮ගࢆ⏝࠸෌⏕ࡋࡓ࠾ࡢ࠾ࡢ 15 ᯛࡢ෌⏕ീ࡛㸪2 Ⰽྜィ࡛ 30 ᯛ࡛࠶ࡿࠋ㟷࡜⥳ࡢ㟢ගࢫᅗ 3 ゅᗘከ㔜 2 Ⰽ࣍ࣟࢢ࣒ࣛࡢ෌⏕ീ
ᅗ 3 ゅᗘከ㔜 2 Ⰽ࣍ࣟࢢ࣒ࣛࡢ෌⏕ീ

－– 2－
–

光技術コンタクトගᢏ⾡ࢥࣥࢱࢡࢺࢣࢪ࣮ࣗࣝࡣ㸪ྛࠎࡢᅇᢡຠ⋡ࡀ➼ࡋࡃ࡞ࡿࡼ࠺࡟࡞ࡗ࡚࠸ࡿࠋ㟷ࡢ࣮ࣞࢨ࣮ࡢ㟢ගࢫࢣࢪ࣮ࣗࣝࡢ➼ࡋ࠸ᖹᆒᅇᢡຠ⋡ࡣ 0.53%࡛㸪⥳ࡢ࣮ࣞࢨ࣮ࡢ
ࡑࢀࡣ 0.13%࡛࠶ࡿࠋὸ࠸‽఩࡛࠶ࡿ Fe ‽఩࡟ࢺࣛࢵࣉࡋ࡚࠸ࡓ㟁Ꮚࡀ῝࠸‽఩ࡢ Mn ‽఩࡟ࢺࣛࢵࣉࡉࢀ࡚࠸ࡿࡢ࡛㸪⥳ࡢ࣮ࣞࢨ࣮࡟ᑐࡍࡿឤᗘࡀῶᑡࡋᅇᢡຠ⋡ࡀపࡃ࡞ࡗ࡚࠸ࡿࠋࡇࢀࡽከ㔜ࡢ≀యࡢ࣍ࣟࢢ࣒ࣛグ㘓ࡣ㸪࣓࣮ࣔࣜ࡜ྠᵝ࡟ 3 ḟඖീ෌⏕ᢏ⾡࡟⏝࠸ࡽࢀ࡚࠸ࡿࠋPR࣏࣐࣮ࣜࡣ㸪ᅛయࡢ⤖ᬗ࡟ẚ࡭ྍᧉᛶ࡟ඃࢀ኱⏬㠃ࡢ PR ࣏࣐࣮ࣜࡀ〇స࡛ࡁ㸪㧗㏿࡟᭩ࡁ᥮࠼ࡀ࡛ࡁࡿ≉ᛶࢆᣢࡕ 3 ḟඖ࢔ࢽ࣓࣮ࢩࣙࣥീࡢᒎ♧࡟฼⏝ࡉࢀ࡚࠸ࡿࠋ(P. Blanche et al., Nature 468,80-83, 2010)

Vol. 59
No. 55 (2021)( 2021 )59,, No.

－– 3－–